Nickel Boron Stripped Bolt Carrier

AR-15 NITRIDE SKELETONIZED LOW MASS BOLT CARRIER GROUP by Guntec (0) 7. 56mm NATO) Material: Carrier (8620 Steel), Bolt (C158) Finish: Nickel Boron Plated. Rainier Arms has been putting out a lot of Bolt Carrier Groups lately. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. Rainier Arms Precision Match Grade Nickel Boron BCG. 56/300 Blackout bolt carrier group. Great article we will be sharing this on our facebook page as an independent source of what happens to Nickel Boron. Delta Team Technical can supply you with several dozen bolt carrier groups and parts today. 56/223 BCG Nickel Boron Bolt Carrier Group Our Price: $159. 00 : Del-Ton: AR-15 Bolt Carrier and Key: $60. Aero Precision upgraded. EXO nickel boron coats all critical parts and provides permanent dry lubricity and corrosion resistance. 56 Nickel Boron BCG with Carpenter 158 Bolt - No Logo : $134. Price: $119. 56 Full Auto Bolt Carrier Group - Black. It is a full auto BCG and has forward. This Wilson Combat Bolt Carrier Assembly is a. 300 AAC Complete Bolt and Carrier Group is Nickel Boron coated and Chrome Lined. The Bolt Carrier is a Full Auto carrier made from heat treated SAE 8620 Steel. Upgrade your AR15 with the Eisenach Arms side charge bolt carrier. Aero Precision, leading AR-pattern OEM manufacturer has recently released their latest offering in the AR-15 pattern with their new complete Nickel Boron coated 5. You can find AR-15 BCGs from brands like Palmetto State Armory, Cryptic Coatings, Toolcraft, and Faxon Firearms, to name a few. The Nickel Boron finish is very durable, slick and has a high Rockwell hardness rating of 70C. If you are looking for a high quality BCG that will provide years of abuse, this nickel boron BCG is the perfect upgrade to your firearm. The XPB undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with NiB-X (Nickel Boron) Coating. Nickel Boron Complete BCG (2) $129. Both have Nickel boron finish, silver. Bolt Features: Carpenter 158 steel Heat treated Shot peened NiB coated MPI tested Bolt Carrier Features: 8620 steel NiB coated NiB coated bore Full auto M-16 style/full mass Nickel boron coated for lubricity and wear resistance advantages over regular nitride coatings. Welcome to E2 Armory Shop, AR-15 Parts, Uppers, Stripped Lowers, Bolt Carriers, Lowers Parts Kits, and much more. 260 Remington, 6. 1 Year Warranty. BLACK RAIN ORDNANCE. Bolt is shot Peened and HPT/MPI; Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring; Tool Steel Extractor; Included: Complete Nickel Boron Plated M-16 BCG; Spike's Tactical Lifetime Warranty. 56 Bolt is shot Peened and MPI Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring Tool Steel Extractor High. Ar-15/m16 Bolt Carriers - M16 Bolt Carrier - Stripped bolt carriers Available as semi-auto AR15 or full-auto M16 carrier Ready for installation of gas main and bolt components Matte black phosphate finish Chrome lined interior Machined from 8620 steel Shrouded firing pin Mfg: Brownells SPECS: Stripped matte black finish AR15 or M16. 9310 steel has a high core strength rating, high fatigue strength, and a high harden-ability rating overall, which makes it about 7% stronger than Carpenter 158 steel, when treated properly. Priced Competitively. The Bolt is made from heat treated Carpenter A-158 Steel. v7 complete nickel boron bolt carrier group. Our Nickel Boron BCGs have the super slick glossy EXO finish, not the flaky satin/matte like some others. 56 Bolt Spikes HPT/MPI Bolt Assembly – Nickel. Black Rain Complete AR15 Nickel Boron Bolt & Carrier Group. MCX nickel-boron bolt carrier? This is a discussion on MCX nickel-boron bolt carrier? within the SIG Sauer Rifles forums, part of the SIG Sauer Forum category; I've been looking at some reviews of the MCX and saw one by a young lady who bought an MCX rifle in 300 Blkout. Bolt Carrier Group 223, 556, 300 blackout, 308, 6. 2 ounces; Compatible with AR-15s chambered in 5. Free Shipping on all Toolcraft Bolt Carrier Groups! This Toolcraft 308 Bolt Carrier Group is finished in Nickel Boron and is designed for use in DPMS pattern AR10 rifles chambered in the 308 family of calibers. 56/300 BLK Gunner Light Weight Bolt Carrier Group - TiN (Gold) PVD. Our carriers come with a variety of options and are all manufactured to customer print and specifications within our facility in Marion, North Carolina. 8 SPC Stripped Upper Receiver AR-15/M16 Bolt Carrier Group 5. OEMs and Distributors. Gas key is chrome lined and heat treated per GI specifications. To that end, the V Seven Nickel Boron Bolt Carrier Group is a drop-in upgrade for any AR15 pattern rifle. Investing in a quality AR15 bolt carrier group is the best way to prevent malfunctions in the long run. 62 Caliber Heat Treat, Grind, Shot Peen Nickel Boron Finish Minimum Quantity: 25. Easier to clean than a standard bcg. 56/223: FailZero Nickel Boron EXO Coated M16 Complete Bolt Carrier Group: $304. Precision-machined carrier and bolt manufactured for us to our specifications with our drawing with tolerances allowed for Nickel Boron Coating. 5 Creedmoor. Mil-spec dimensions and coating ensure the highest quality and correct component interface. Nickel Boron finish ensures long term durability and lubrication. 9310 steel bolt with an 8620 steel carrier. The bolt is shot peened and hardened then Magnetic Particle Inspected. FREE SHIPPING on orders over $200. RISE Armament advanced bolt-carrier group (BCG) manufactured with precision and individually inspected to ensure high-level performance. 62X51 / 308 Cal - Nickel Boron Finish - HPT/MPI Tested and Marked - 9310 Hardened Steel Bolt, - 17-4 Stainless Steel Firing Pin (Heat treated to H900 Condition) - 8620 carrier and gas key. Grade 8 Screws to Mil-spec. 308 cal nickel boron bolt carrier group mil-spec bcg AR-10. Quick View. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistan. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. Arm or Ally is a stocking dealer of FailZero Bolt Carrier Groups!. TOOLCRAFT AR10, AR15 & M16 Bolt Carriers come with a variety of options and are all manufactured to customer print and specifications within our facility in Marion, North Carolina. 5 Creedmoor/. Obviously, there is the bolt itself, along with its own set of components. You will be able to use this BCG in AR platform rifles that have a. Toolcraft 6. 8 oz for reduced weight and felt recoil. as a result, there can and will be subtle differences in the parts kits of various manufacturers. This silver finish makes cleaning up a breeze, as carbon has a hard time sticking to it. M16 Full Auto Bolt Carrier w/Key - Nickel Boron - FTF Industries Inc specializes in MAC Cobray RPB SWD Parts & Accessories, AR15/M16 & AK47 Parts and accessories, Tactical Automatic Knives, Gunsmith's Tools & other very unique items. It is secured to the carrier via Grade 8 fasteners and properly staked in our shop during final inspection. Parkerized exterior and chrome lined inside carrier. 300 Blackout, and. Details can be found on the Evike. Bolt Carrier Group. The blemish does not effect function or performance whatsoever, and the BCG is still covered by Toolcraft’s lifetime warranty. Nickel Boron Bolt Carrier Group. 95 (14) Select Options. This high quality BCG from Aero Precision features a Nickel Boron finish, is MPI/HPT and compatible with LR-308, SR25, DPMS Pattern and 6. 99 Custom Deal Recoil Technologies LR-308 Bolt Carrier Group -. The LANTAC E-BCG Enhanced Bolt Carrier Group is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected. 6 Ounces Finish: Nickel Boron. Toolcraft 6. Mil-Spec Carpenter 158 Alloy Stripped Bolt meets or exceeds the mil-spec standards. 223 /Complete Bolt and Carrier Group. APOC Armory Premium Nickel Boron M16 Bolt Carrier Group. The 8620 hardened steel carrier is smooth and without forward assist cuts. 56MM AR-15 NICKEL BORON (No Reviews) SKU: Model: UPC: 859143003535. AR 9MM NICKEL BORON BOLT CARRIER GROUP MIL-SPEC BCG quantity. 56 Bolt Carrier Group MP brownells. This BCG has been engineered for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. Full Profile M16 Bolt Carrier Group -- Nickel Boron Coating Compatibility:. Palmetto State Armory has a large selection of complete AR-15 bolt carrier groups to help you complete your build. This drop-in AR-15 BCG features a slick, corrosion resistant nickel boron finish, MIL-SPEC dimensions, and a C158 bolt. add to cart. The gas key feeds gas from the gas tube into the carrier and bolt. Bolt carrier groups consist of several different parts. do NOT contact me with unsolicited services or offers. 56 Nickel Boron BCG from Aero Precision! This 5. Product Description. Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key) Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked. High pressure treated AND mag particle inspected. Each faxon firearms bolt-carrier group comes complete with a bolt machined from 9310 tool steel, which is strengthened even further through a nitride-treatment. 308 Winchester. NiB-X ® reduces friction to the bare minimum and is impervious to corrosion and abrasion. You Save: $89. FREE SHIPPING on Grendel Hunter Bolt Carrier Groups! Nickle Boron, 8620 Steel Carrier; M16 Auto Profile; 6. Government. gas key is hardened and secured with Grade 8 fasteners, and is staked per Mil-Spec standards. Faxon Firearms 5. 5 grendel, 458 socom, nickel boron, nitride. Popular brands like JP Enterprises, Faxon Firearms and CMMG offer high quality BCGs that will go the distance on your modern sporting rifle. Get a high quality Bolt Carrier Group for your AR with this superb. Calibers this BCG will work with include 5. Exacting dimensions and superior coating ensure the highest quality and correct component interface. Anyone have any experience with the Ni-B coatings that companies like Failzero place on BCG's? Brownells had a stripped carrier on sale so I picked one up for my new build, since I am working on a 6. Our upgraded nickel boron bolt carrier group is an eye catching addition to your AR build. The BCG is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected. Fits guns chambered for. Compatible with DPMS Gen 1 specs. 56/300BO BOLT CARRIER GROUP NICKEL BORON BCG-N -Specifications:Machined from 8620 tool steel Forward assist serrations Shrouded firing pin. Aero Precision Nickel Boron Bolt Carrier Group Test and Review / Two Minute Tuesday. out of stock / shipping available. The components of the bolt carrier group have been NiBx coated and polished to reduce fouling. includes: m16 style nickel boron coated carrier made from 8620 steel; nickel boron coated gas key, properly staked; free shipping within the usa!. 5mm Creedmoor, or any other cartridge based on the. Then came Nickel Boron (NiB) and later Titanium Nitride (TiN). Nickel Boron finish ensures long term durability and lubrication. - Hardened extractor S7 tool steel. 56 Nickel Boron BCG from Aero Precision! This 5. The BCG weighs only 8. 62X51 / 308 Cal - Nickel Boron Finish - HPT/MPI Tested and Marked - 9310 Hardened Steel Bolt, - 17-4 Stainless Steel Firing Pin (Heat treated to H900 Condition) - 8620 carrier and gas key. Nickel-boron finish; Weighs 8. 2 ounces and is compatible with AR-556s chambered in multiple calibers including 5. Nickel Boron is very desirable as it requires less lubrication and results in less malfunctions (when treated properly). The Wilson Combat 308 Win. 8620 Steel Phosphate Coated Chrome lined bore M-16 Style with more mass for better functioning in semi or full auto rifles. 9310 steel bolt with an 8620 steel carrier. Detail AR-15 Bolt Carrier Group 7. You will be able to use this BCG in AR platform rifles that have a. RTB Nickel Boron Bolt Carrier Group - 9310 - MPI - M16 BCG (5. MSRP Price: $289 Young MFG National Match Right Side Charge Bolt Carrier Stripped (NO BOLT) w/ Side. Lightweight AR-15 Bolt Carrier Groups. The Bolt is made from heat treated Carpenter A-158 Steel. Complete Nickel Boron Bolt Carrier Group •Nickel Boron coating •Machined to mil-spec standards •Heat treated •Made in the USA. Compatible with DPMS Gen 1 specs. 56) MSRP $169. Phase 5 AR-15 Complete BCG with All-Over-Print - Black Phosphate, chrome lined. Deals forums, part of the Vendors category; AR-15/M16 Nickel Boron Bolt Carrier Groups - $162. 99 On sale: $125. 99 (2) $134. AR15 Bolt Carrier Group Nickel Boron. Free Shipping on Orders Over $100. The blemish does not effect function or performance whatsoever, and the BCG is still covered by Toolcraft’s lifetime warranty. Bolt carrier group and charging handle. Bolt Carrier. 34 (2) $211. Permits firing for longer periods of time between cleaning, as dirt and powder residue has no wet or. Stripped Lowers; Upper/Lower Sets Bolt Carrier Group- Nickel Boron $ 225. 5 Creedmoor/. Choose Options. Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-X ® nickel boron coating that results in a super-smooth, harder-than-chrome surface. It features Mil-spec dimensions and coating, is made of steel, with a shrouded firing pin, Mil-Spec extractor spring, black extractor insert, Viton O-ring and a tool steel extractor. Nickel Boron Bolt Carrier Group 450/458 SOCOM Nickel Boron Bolt Carrier Group 450/458 SOCOM Features:. Quantity: Sorry we are currently sold out. Ar-15/m16 Bolt Carriers - M16 Bolt Carrier - Stripped bolt carriers Available as semi-auto AR15 or full-auto M16 carrier Ready for installation of gas main and bolt components Matte black phosphate finish Chrome lined interior Machined from 8620 steel Shrouded firing pin Mfg: Brownells SPECS: Stripped matte black finish AR15 or M16. APF products are made right here in The Guide's own backyard—Alexandria, Minnesota. NiB-X ® reduces friction to the bare minimum and is impervious to corrosion and abrasion. 8/224 valkyrie bolt-carrier group is built from the ground up to provide dependable, reliable performance that's tuned to the dimension of the 224 valkyrie round. All critical parts are coated with EXO Nickel Boron technology. sku: kspusti7-lm-1-1-1. Popular brands like JP Enterprises, Faxon Firearms and CMMG offer high quality BCGs that will go the distance on your modern sporting rifle. 00 : JSE Surplus: M16 Milspec Stripped Carrier (ONLY)/NO KEY. ION Bonded Gas Rings $ 9. 56 AR-15 bolt and carrier assembly coated in Nickel Boron. Bolt Carriers are made from 8620 Aircraft Quality Steel. , 300 Blackout and. 243 WIN + HEXMAG, Magazine, 308 Win/7. 56 Nato chamber (shoots both 5. It is a full auto BCG and has forward. 95 SALE M16 Bolt Carrier Group Phosphate/Chrome Out of stock SALE M16 Bolt Carrier Group Titanium Nitride Out of stock SALE. 308 Winchester. These are 100% brand new, fully functional Toolcraft NiB BCGs with a minor cosmetic blemish. Nickel Boron coating inside and out. The Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete is comprised of our patented Relia-Bolt™ and our Balanced Bolt Carrier. Complete Nickel Boron Plated M-16 BCG Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key) Laser Engraved with ST Spider logo Mil Spec Carrier 8620 Ar Lower Ar Build Holiday Sales Laser Engraving Firearms It Is Finished Military Army Group Products. 99 Read more Quick View. MPI tested bolt. 5 creedmoor, 6. Home Products. Features of this assembly include a carrier machined from 860 tool steel and bolt produced from 9310 steel and a nickel boron coating inside and out of the bolt, carrier and gas key. 56 / 300BLK. This coating gives the carrier extreme lubricity, stops the finish from wearing away with use, and makes cleaning the carrier as simple as wiping it with a dry rag. Assembled Bolt Carrier Group for AR-15/M16; Bolt carrier made of 8620 steel; Magnetic Particle Inspected and marked “MPI” Carrier has UCT Nickel Boron finish; UCT Nickel Boron coated before assembly for complete part coverage; Bolt made from Carpenter No. Finish: NICKLE BORON. 56 AR-15 bolt and carrier assembly coated in Nickel Boron. NOW HP TESTED! The Rainier Arms Precision Match Grade Nickel Boron BCG - 5. Davidson Defense Premium Stripped Nitride Bolt Carrier - Side Charging Capability $99. 300BLK M16(FA) Complete Bolt and Carrier Group (BCG) Specifications: Bolt and Bolt Carrier are completely treated in Nickel Boron inside and out. Toolcraft 6. Our enhanced. The XPB undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with NiB-X (Nickel Boron) Coating. 308 Bolt Carrier Price: $249. 50 : Palmetto State Armory: Premium 5. 5 Grendel EXO Nickel Boron Bolt Carrier Group - Carpenter 158 Steel Bolt, HP/MPI Tested, featuring the FailZero Logo. SALE PRICE: $109. 8620 Steel Bolt Carrier. We custom machine our bolt carrier groups with a focus on tolerance and a unique, aggressive look that also reduces weight. Email: [email protected] 338 Federal,. apf products are 100% made in the usa to ensure that you are getting the best products on the market. Choose Options. The Uncouth Truth 36,602 views. Then came Nickel Boron (NiB) and later Titanium Nitride (TiN). The carrier is shot peened 8620 Steel and the bolt is MPI 9310 material. It is what makes the AR-15 function and an essential, if overlooked piece. Our enhanced. The cheapest deal for Zev Z34 Prizefighter Stripped Slide With Rmr 3rd Gen. 9310 Tool Steel Spike's Tactical F Cancer Stripped Lower Receiver. This means increased reliability when the rifle is dirty or under lubricated. your password. 300 Blackout, and. BCM® (MPI) complete bolt carrier group is fully assembled. Aero Precision 5. 56 Nickel Boron Bolt Carrier Group: Aero Precision 5. This Nickel Boron bolt carrier is an eye catching addition to your AR build. 260 Remington, 6. Out-of-stock. AR-15 Bolt Carrier Group- NICKEL BORON AR 9MM Stripped Dedicated Glock Style Custom BILLET 80% Lower Receiver- BLACK. 56 Bolt Carrier Group, Nickel Boron ADK Arms tried and true 223/5. No AR15 build is complete without a high-grade Nickel Boron bolt carrier group - BCG. What: Quality M16 5. Heat Treated for Heavy Duty use. 308 cal nickel boron bolt carrier group mil-spec bcg AR-10. All of our rifles, upper assemblies, lower assemblies and components come with our limited lifetime warranty. Fail Zero Nickel Boron AR15 Bolt Carrier Group: $139. AR15/M16 Left Handed Nitride Bolt Carrier Group 5. Priced Competitively. 62 Nickel Boron BCG from ACME Machine ! This. Features: - The M16 profile bolt carrier has a full-diameter section at the end of the carrier providing additional weight for added stability and is fully compatible with AR-15 platforms. Buyer beware: Ares Armor Bolt Carrier Groups I am slowly piecing together an AR-15 build. With a little elbow grease the NiB cleans up nicely. 62x39 Stripped bolt (0) Your Price: $49. Cam Pin: Material: 4140 Steel. Perfect as an enhancement to your current AR-308 platform or for that new build you’ve been thinking about. 2 days ago Lowprice Game Changer Pro Compensator For Rugerâ. The Nickel Boron coating will increase corrosion resistance and ease of cleaning. 5 Grendel EXO Nickel Boron Bolt Carrier Group - Carpenter 158 Steel Bolt, HP/MPI Tested, featuring the FailZero Logo. 223) HBAR Profile - Fluted. It is what makes the AR-15 function and an essential, if overlooked piece. MPI tested bolt. Stripped Uppers; Handguards & Rails F-1 5. 308 Bolt Carrier Price: $249. Phase 5 AR-15 Complete BCG with All-Over-Print - Black Phosphate, chrome lined. 56/223 BCG Nickel Boron Bolt Carrier Group Our Price: $159. The APF Nickel Boron BCG is heat treated, shot peened, and machined to mil spec standards. 8620 Steel carrier. It features Mil-spec dimensions and coating, is made of steel, with a shrouded firing pin, Mil-Spec extractor spring, black extractor insert, Viton O-ring and a tool steel extractor. Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key) Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked. Obviously, there is the bolt itself, along with its own set of components. Popular brands like JP Enterprises, Faxon Firearms and CMMG offer high quality BCGs that will go the distance on your modern sporting rifle. Toolcraft BCG Nickel Boron AR15 Semi-Auto Bolt Carrier Group 9310 MPI Tested. 00 : Del-Ton: M-16 Bolt Carrier and Key: $60. Product code: RF-BCG02 Categories: AR 15, AR 15 Parts, Barrel/Bolt Combos, BCG, Uppers Assemblies $ 119. Shown in Nickel Boron finish. SPECS: Carrier – 8620 carbon steel. Arm or Ally is a stocking dealer of FailZero Bolt Carrier Groups!. Extractor includes black buffer, black O-ring, and spring. This Nickel Boron bolt carrier is an eye catching addition to your AR build. 308 Bolt Carrier Group is Nickel Boron coated and features a Carpenter 158 shot peened bolt. This BCG has been engineered for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. 99 QuickView DoubleStar AR Ejector Pin 10 Pack AR115 DoubleStar AR Ejector Pin. SAA AR-10 /. 95 (14) Select Options. Chromed bolt carrier groups were some of the first alternative BCGs to be released. Nickle boron plated. 56MM AR-15 NICKEL BORON (No Reviews) SKU: Model: UPC: 859143003535. Reduced Friction SOT (Nickel Boron) Complete M16 Bolt Carrier Group (5. 5 Creedmoor Bolt Carrier Group (BCG) - Nickel Boron. 56 AR-15 bolt and carrier assembly coated in Nickel Boron. Nickel Boron Bolt Carrier Group. AR15/M16 Left Handed Nitride Bolt Carrier Group 5. 223 bolt carrier group. 56 Bolt Carrier, Nickel Boron, Mil-Spec or other Gun Parts from. Both have Nickel boron finish, silver. M16 Bolt Carrier is machined from 8620 steel and hardened; Interior of Bolt Carrier Carrier Key are Nickel Boron; M16 Bolt Carrier will function in semi-auto or full-auto AR15/M16; Gas Key Screws are properly torqued and staked; Bolt and Bolt Carrier feature a Nickel Boron mil-spec finish. Product Description. 300 Blackout, and. This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec M16, M4, & AR15 upper receivers. Shot Peened Bolt HPT/MPI Carrier, Gas Key, Cam Pin, Bolt, & Extractor coated inside and out with EXO NiB Test Fired complete before shipping to ensure proper function. This bolt is ready for assembly. Coated with nickel boron to reduce friction and improve the rifle's overall performance; Unit weight: 11. AR-15 NITRIDE SKELETONIZED LOW MASS BOLT CARRIER GROUP by Guntec (0) 7. 56 Shot Peened and MPI Caliber:. 56 Nickel Boron Bolt Carrier Group: Aero Precision 5. All of the bolt carrier groups from Right to Bear Arms and Supply include special features that provide the best bang for your buck. Smooth cycling and is easy-to-clean by simply wiping it down. 56 Durabolt Bolt Carrier Group- Nickel Boron Matte (NiB) Faxon Firearms Gen 2 9mm PCC Blowback Full-Mass Bolt. The carrier is machined from 8620 Tool Steel extractor. Product Description. Bolt Subassembly:. Never used or installed. Side staked gas key with grade 8 fasteners. AR15 Bolt Carrier Group Nickel Boron -. MSRP Price: $289. The Nickel Boron finish is very durable, slick and has a high Rockwell hardness rating of 70C. Assembled with 100% U. Aero Precision 5. 56 Bolt Carrier, Nickel Boron, Mil-Spec or other Gun Parts from. The Bolt Carrier is a Full Auto carrier made from heat treated SAE 8620 Steel. 5 Creedmoor, 7. Extractor includes black buffer, black O-ring, and spring. Machined from 8620 Tool Steel (Carrier) and 9310 Carpenter Steel (Bolt) Carrier has forward assist serrations Shrouded firing pin Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key) Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked. Priced Competitively. 308 BCG Spikes Tactical-Nickel Boron 5. Mil-spec dimensions and coating ensure the highest quality and correct component interface. apf products are 100% made in the usa to ensure that you are getting the best products on the market. 308 USGI NIB Nickel Boron Bolt Replacement -Genuine USGI Production, NOT inferior commerical grade. Show all images. 56 Bolt Spikes HPT/MPI Bolt Assembly – Nickel. This eye catching complete Aero Precision 5. Bolt carrier group and charging handle. Blemishes vary by type and location but may be a blemish in the carrier itself or may be a minor cosmetic blemish in the finish. Bolts, Carriers & Bolt Carrier Groups (BCGs) for AR-15, AR-9 and AR-10 / 308. AR-15 carrier available. The bolt carrier group is without a doubt the hardest working component of an AR15. - Nickel Boron coated bolt carrier, heat treated & hardened. Guntec USA AR. 3 Cam Pin: 8620 Steel w/ Black Nitride Finish. NiB-X ® reduces friction to the bare minimum and is impervious to corrosion and abrasion. See our great selection. It is what makes the AR-15 function and an essential, if overlooked piece. Add a bit of flash and style to your next custom AR15 rifle while improving one of the most important parts of your rifle. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. The bolt is precision machined from Carpenter 158 steel and includes an S7 tool steel extractor and hardened ejector. 00 (Out of Stock) LEFT HAND RXA BOLT CARRIER w/KEY Price: $100. Quantity on Hand: 0. The gun runs a little better with it and the charging handle is noticeably easier to operate because there is less friction. LANTAC E-BCG, Enhanced Bolt Carrier Group. M16 Complete Bolt Carrier Group – Nickel Boron. com Facebook page. From firing pins to bolt carrier groups, our attention to detail ensures that our customers receive only the best components. The Bolt and Extractor are shot peened. EXO nickel boron coats all critical parts and provides permanent dry lubricity and corrosion resistance. Bolt Carrier Groups WMD brings the advanced performance of NiB-X® nickel boron and other performance coatings to one of the most critical components on your AR. This M16/M4 carrier includes the proper Mil-Spec gas key. The nickel boron coating has increased lubricity and a low friction co-effi. I have for sale a bolt carrier. 2 ounces and is compatible with AR-556s chambered in multiple calibers including 5. Exacting dimensions and superior coating ensure the highest quality and correct component interface. Does NOT include Cam Pin & Firing Pin; Made in the U. The Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete is comprised of our patented Relia-Bolt™ and our Balanced Bolt Carrier. This high quality BCG from Aero Precision features a Nickel Boron finish, is MPI/HPT and compatible with LR-308, SR25, DPMS Pattern and 6. 56 Bolt Machined from 9310 Forged Gas Key Properly Staked Tool Steel Extractor Mil-Spec Extractor Spring with black insert and Viton O-Rin Ballistic Advantage, Bolt Carrier Group, Nickel Boron, 5. 308 Winchester. If you are looking for a high quality BCG that will provide years of abuse, this nickel boron BCG is the perfect upgrade to your firearm. 62x39 Stripped bolt (0) Your Price: $49. Bolt Carriers are made from 8620 Aircraft Quality Steel. 5 Grendel EXO Nickel Boron Bolt Carrier Group - Carpenter 158 Steel Bolt, HP/MPI Tested, featuring the FailZero Logo. Grade 8 Screws to Mil-spec. Lightweight AR-15 Bolt Carrier Groups. Davidson Defense Premium Stripped Nitride Bolt Carrier - Side Charging Capability $99. 204, 300 Blackout. Q: Ni ckel boron (NiB) bolt carrier groups (BCG) for AR-style rifles now seem to be available at affordable prices, although they are still. Guntec AR15 Bolt Carrier Group - Nitride. Compatable with 9mm Conversion Kits and 9mm billet lowers that accept GLOCK®-style magazines. Aero Precision Nickel Boron 308 AR Bolt Carrier Group DSullivan August 1, 2015 AR 308 Bolt Carrier Group , AR 308 Parts , News There are a couple simple reasons to utilize a Nickel Boron 308 AR Bolt Carrier Group in your 308AR and AR-10 rifles. Add a bit of flash and style to your next custom AR15 rifle while improving one of the most important parts of your rifle. Bolt Carrier. UTC’s EXO coated technology is a patented process that deposits a nickel boron (NiB) casting onto a metal surface giving that surface a permanent dry-lubricious material. Shown in Nickel Boron finish. Above: Toolcraft brand Nickel Boron Bolt Carrier Group in 5. Ar-15/m16 Nickel Boron Bolt Carrier Group Nickel Boron Bolt Carrier Group 5. Nickel Boron finish ensures long term durability and lubrication. The bolt is made 8620 steel and designed for 556/223 right handed shooters. We offer BCGs from brands like Palmetto State Armory, PSA Custom, Cryptic Coatings, Toolcraft, and more. The Carrier, Bolt, Extractor, Cam Pin and outside of Carrier Key are Nickel Boron plated making them slicker for less friction and smoother operation and easier to clean. 56 Nickel Boron Bolt Carrier Group: Aero Precision 5. The LMT carrier is impossible to find right now and on a waitlist for 5 months or I would be using it already. All metals, Hardness, and Coating meet or exceed Mil-spec. AR-9 9mm NICKEL BORON BOLT CARRIER GROUP MIL-SPEC BCG. AR15/M16 Left Handed Nitride Bolt Carrier Group 5. If you are looking for a high quality BCG that will provide years of abuse, this nickel boron BCG is the perfect upgrade to your firearm. Quick View F-1 Firearms DuraBolt AR-15 Bolt Carrier Group. The bolt carrier group holds the majority of the gas pressure when the AR-15 is fired. Anyone have any experience with the Ni-B coatings that companies like Failzero place on BCG's? Brownells had a stripped carrier on sale so I picked one up for my new build, since I am working on a 6. 204, 300 Blackout. m4 feedramps. Exacting dimensions and superior coating ensure the highest quality and correct component interface. Bolt Carrier Material: 8620 Steel. 308 Winchester. Mil-spec dimensions and coating ensure the highest quality and correct component interface. Aero Precision Gen 2 Stripped AR15 Lower-FFL Required. Gas Keys are torqued to 55 in/lbs & RED Loctite applied as sealant; Bolt Carrier,Gas key and Handle weigh 15. We manufacture over 9,000 carriers per week each available with Chrome/Phosphate, Nickel Boron or machined to satisfy all our customers. 223) HBAR Profile - Fluted. Never used or installed. Add a bit of flash and style to your next custom AR15 rifle while improving one of the most important parts of your rifle. 300BLK M16(FA) Complete Bolt and Carrier Group (BCG) Specifications: Bolt and Bolt Carrier are completely treated in Nickel Boron inside and out. Plated by UCT/Fail Zero. I have a low round count DPMS 308 stripped bolt carrier. use a soft brush if needed. The Bolt Carrier is a Full Auto carrier made from heat treated SAE 8620 Steel. Aero Precision states “Our upgraded nickel boron bolt carrier group is an eye catching addition to your AR build. Accessories → Gun Parts → FosTecH Complete LOW MASS Bolt Carrier Group (Nickel Boron) - 6229. Brownells known for manufacturing some of the best choice in the market, and the Brownells BCG is one of their best efforts yet. Harder than Tennifer, Melonite, Nickel Teflon and Hard Chrome (NiB-X is Rc72). 00 : JSE Surplus: M16 Milspec Stripped Carrier (ONLY)/NO KEY. The cheapest deal for Zev Z34 Prizefighter Stripped Slide With Rmr 3rd Gen. 56 Bolt Spikes HPT/MPI Bolt Assembly - Nickel Boron. 458 SOCOM Nickel boron finish M16 cut Aircraft quality 8620 steel carrier 4130 steel gas key Properly staked grade 8 gas key screws Carpenter. Needless to say I was intrigued and wanted to get one for the Spartan build, but when I started looking around for components, the market had already become sparse for parts. 25 in stock. Ar-15/m16 Bolt Carriers - M16 Bolt Carrier:. 56 Bolt Machined from 9310 Forged Gas Key Properly Staked Tool Steel Extractor Mil-Spec Extractor Spring with black insert and Viton O-Rin Ballistic Advantage, Bolt Carrier Group, Nickel Boron, 5. This BCG has been engineered for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. 308 bolt carrier group - nickel boron 8620 steel carrier nickel boron coated finish staked gas key the ar10 platform does not enjoy a common design between manufacturers, like the ar15. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. AR15/M16 Left Handed Nitride Bolt Carrier Group 5. 62 NATO, etc. However, some rifle owners do not understand that many 5. 8620 M16 style carrier Nickel Boron Coating Properly heat treated Final grind before plating; 9310 5. Our online reviews speak for themselves. coated with Nickle Boron and includes Cam Pin, Firing Pin and Firing Pin Retainer. gas key is hardened and secured with Grade 8 fasteners, and is staked per Mil-Spec standards. We've seen just ab Call Us 407-955-3030. Something something about the bolt having similarities to a heat sink and making contact with fresh/cooler air. Reduced Friction SOT (Nickel Boron) Complete M16 Bolt Carrier Group (5. This precision machined and superior quality Full Auto bolt carrier group utilizes an 8620 steel for the carrier and a 9310 bolt that are both then Nickel Boron coated before being assembled. 5oz) Machined from our proprietary 8620 forging. It is secured to the carrier via Grade 8 fasteners and properly staked in our shop during final inspection. 308 bolt carrier group - nickel boron 8620 steel carrier nickel boron coated finish staked gas key the ar10 platform does not enjoy a common design between manufacturers, like the ar15. Easier to clean than a standard bcg. 00 Add to cart Quick View. To that end, the V Seven Nickel Boron Bolt Carrier Group is a drop-in upgrade for any AR15 pattern rifle. Free Shipping on all Toolcraft Bolt Carrier Groups! This Toolcraft 308 Bolt Carrier Group is finished in Nickel Boron and is designed for use in DPMS pattern AR10 rifles chambered in the 308 family of calibers. The bolt is made 8620 steel and designed for 556/223 right handed shooters. 5 Creedmoor/. 00 Choose Options. ultra slick nickel boron coating allows smoother operation with less lubrication and easier cleanup. Nickel Boron Complete BCG (2) $129. Black Rain Complete AR15 Nickel Boron Bolt & Carrier Group. 078-000-392WB 308AR Bolt Carrier Group 308 Win Nickel Boron MP Cartridge: 308 Winchester Finish: Nickel-Boron The Ideal Big-Bore Bolt Carrier Group The Brownells Complete. 56 DLC Bolt Carrier Group - with Logo: Aero Precision 5. FailZero Nickel Boron Bolt Carrier upgrades give LE, security and military professionals the "active weapon advantage" in critical use: no grease to hold grit, no oil to wear off, and no gun-jamming crud on key components. Self-Lubricating Finish For Outstanding Durability & Resistance To Fouling. Easier to clean - wipes clean in most cases. Made to exact compliance with DPMS Gen 1 specs, then taken to the next level with advanced machining and finishing processes:. Extractor has a Crane O-ring installed for reliable brass extraction. SKU: 10093068 Item: BCG-NB Be the first to leave a review and receive a $10 on your next order!. Parkerized exterior and chrome lined inside carrier. Smooth cycling and is easy-to-clean by simply wiping it down. Price: $149. I must admit that the idea of the Nickel Boron coating on a BCG is pretty cool to me; I had seen many people posting about them on different forums and YouTube videos. Fits mil-spec AR-15/M16 upper receiver. Free Shipping on all Toolcraft Bolt Carrier Groups! This Toolcraft 308 Bolt Carrier Group is finished in Nickel Boron and is designed for use in DPMS pattern AR10 rifles chambered in the 308 family of calibers. 99 : Palmetto. Full Profile M16 Bolt Carrier Group -- Nickel Boron Coating Compatibility:. Requires very little lubrication and has a very slick surface. Carrier 8620 Steel. Plated by UCT/Fail Zero. Features of the V Seven NB BCG: M16 style carrier w/ properly staked gas key; Compatible w/ both Semi/Full Auto Configurations; Contains V Seven Improved Cam Pin; Chrome finished firing pin and firing pin retaining pin. 62 Durabolt Bolt Carrier Group; 308 Bolt Carrier Group-Nickle. Comes with titanium firing pin. 95 SALE; M16 Bolt Carrier Group Phosphate/Chrome Out of stock SALE. Out Of stock online. 223 bolt ($159) and also some blems for $142. 56 Bolt Carrier, Nickel Boron, Mil-Spec or other Gun Parts from. Text Rich 478 3653519. Additional Info. 223 Nickel Boron Bolt and Carrier Group for AR15 Rifles with your friends and fellow Evike. To that end, the V Seven Nickel Boron Bolt Carrier Group is a drop-in upgrade for any AR15 pattern rifle. This Nickel Boron bolt carrier is an eye catching addition to your AR build. The Iron Forge 7. as a result, there can and will be subtle differences in the parts kits of various manufacturers. Show all images. The Adams Arms Low Mass Piston Carrier Group in Nickel Boron: Does not include the bolt Is 21% lighter then our standard bolt carrier (7. M16 carrier design. 62 Nickel Boron BCG! This. 99 : Palmetto State Armory: Toolcraft Logo'd Premium 5. Add a bit of flash and style to your next custom AR15 rifle while improving one of the most important parts of your rifle. Aero Precision Nickel Boron Bolt Carrier Group Test and Review / Two Minute Tuesday. 62 x 39 Nickel Boron. 99 (2) $134. Very lubricious (CoF. AR 9mm NICKEL BORON BOLT CARRIER GROUP -Compatible With Glock & Colt Style Lower ReceiversMIL-SPEC 8620 SteelExternal ExtractorDust Cover Compatib. Bolts, Carriers & Bolt Carrier Groups (BCGs) for AR-15, AR-9 and AR-10 / 308. Guntec AR10 Bolt Carrier Group - Nickel Boron. 308 bolt carrier group - nickel boron 8620 steel carrier nickel boron coated finish staked gas key the ar10 platform does not enjoy a common design between manufacturers, like the ar15. AR 9MM NICKEL BORON BOLT CARRIER GROUP MIL-SPEC BCG quantity. There is also the carrier that houses the bolt, a gas key that connects to the carrier, and a few different kinds of pins. Omega Deals Davidson Defense M-16 M-16A2 Full-Auto Complete Mil Spec Lower Parts Kit *100% American Made* + Faxon Firearms AR-15 5. We stock a wide variety of OCG-Main-Products. 56 Bolt Carrier Group - Nickel Boron: The ASC Bolt Carrier Group has been machined to Mil-Spec standards and tested to ensure the assembly is free of any imperfections. re: How do you clean Nickel Boron Bolt carrier groups? Posted by Carson123987 on 6/23/15 at 2:07 pm to Broke you shouldnt have to clean it very often, and when you do, the shite should just wipe right off. The Bolt is shot peened and manufactured out of 9310 Tool Steel with a 4140 Machined Extractor. 56 Nickel Boron BCG from Aero Precision! This 5. Stag Arms announced the rollout of their latest SKU. The gun runs a little better with it and the charging handle is noticeably easier to operate because there is less friction. Easier to clean - wipes clean in most cases. These are 100% brand new, fully functional Toolcraft NiB BCGs with a minor cosmetic blemish. The cheapest deal for Zev Z34 Prizefighter Stripped Slide With Rmr 3rd Gen. NiB Coated. Out-of-stock. 56 Bolt Spikes HPT/MPI Bolt Assembly - Nickel Boron. Bolt is shot Peened and HPT/MPI; Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring; Tool Steel. Rainier Arms says that these are machined to higher standards and tolerances than their standard Mil-spec Bolt Carrier Groups. 8620 Steel Bolt Carrier 9310 Bolt MPI (Magnetic Particle Inspected) Hydraulically Staked CL Key Grade 8 Screws to Mil-spec USA Made Heat Treated for Heavy Duty use, Hard Nickel P+ Finish. Uppers don't get much nicer than this. The Uncouth Truth 36,602 views. Grade 8 Screws to Mil-spec. 56 Nickel Boron BCG with Carpenter 158 Bolt - 5165449729 : $134. The Wilson Combat 308 Win. 99 In Stock. Environmental corrosion protection. LANTAC E-BCG, Enhanced Bolt Carrier Group. as a result, there can and will be subtle differences in the parts kits of various manufacturers. Lightweight Bolt Carrier Group $300. 2 days ago Lowprice Game Changer Pro Compensator For Rugerâ. The bolt is made from 9310 steel and the carrier is made from 8620 steel. 56 is machined and finished to a higher standard to meet and exceed all Mil Spec. The Bolt is made from 9310 steel and coated per Mil-Spec. Fits mil-spec AR-15/M16 upper receiver. Anderson Manufacturing AR-15 Bolt Carrier Group - Nickel - This Anderson Manufacturing M16/AR-15 complete bolt carrier group is ready to drop into your new AR-15 build. Compatibility:. Out of Stock. We take a look at their features, pros, cons and what they have to offer. Finish: NICKLE BORON. These are the heavier M16 carrier with a Nickel Boron coating and will work with any AR15 platform rifle designed to use a standard BCG. AR15/M16 Left Handed Nitride Bolt Carrier Group 5. RGuns Nickel Boron Stripped Bolt Carrier. 56 Nato chamber (shoots both 5. The 8620 hardened steel carrier is smooth and without forward assist cuts. To make your search easier, we have gathered here the four best AR 15 bolt carrier group. High quality mil-spec+ with properly staked gas key. AB ARMS BOLT CARRIER GROUP 5. I have a low round count DPMS 308 stripped bolt carrier. Me personally will be using a LMT E carrier and a Sionics NiB coated bolt in my 11. Young Manufacturing, Inc. APF AR-10 DPMS-Compatible Bolt Carrier Group, Nickel Boron. Stripped Uppers; Handguards & Rails F-1 5. FailZero Nickel Boron Bolt Carrier upgrades give LE, security and military professionals the "active weapon advantage" in critical use: no grease to hold grit, no oil to wear off, and no gun-jamming crud on key components. This Nickel Boron BCG has an advanced metal finish that offers high. FEATURES M16 Carrier Machined from 8620 5. Perfect as an enhancement to your current AR-308 platform or for that new build you’ve been thinking about. The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer. Alex Pro Firearms® M16 Nickel Boron Bolt Carrier Group, machined to mil-spec standards, and nickel boron-plated for smoothness. Harder than Tennifer, Melonite, Nickel Teflon and Hard Chrome (NiB-X is Rc72). You may also like: $161. 3070 SE Dominica Terrace Stuart, FL 34997-5717 Phone: (772) 324-9915 [email protected] 308 Bolt Carrier Group is designed to operate reliably in DPMS LR-308 pattern rifles chambered in. We carry a complete selection of AR-15, AR-308 and AR 9mm accessories!. Our carriers come with a variety of options and are all manufactured to customer print and specifications within our facility in Marion, North Carolina. Nickel Boron Coating inside and out (Bolt, Carrier, and Gas Key) Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked. 204, 300 Blackout. 223 bolt ($159) and also some blems for $142. The Nickel Boron coated Bolt Carrier Group enhances reliability, lessens cleaning time, improves corrosion resistance and minimizes required bolt lubrication. AR 15 Bolt Carrier Group, AR 15 Charging Handle AR-15 AR-9 Lower Receivers Stripped, Forged; 5. Out of Stock. This means increased reliability when the rifle is dirty or under lubricated. Quick view. Machined to USGI specifications. 450 Bushmaster (Type 2). FailZero Nickel Boron Bolt Carrier upgrades give LE, security and military professionals the "active weapon advantage" in critical use: no grease to hold grit, no oil to wear off, and no gun-jamming crud on key components. 8620 Steel carrier. These are 100% brand new, fully functional Toolcraft NiB BCGs with a minor cosmetic blemish. 260 Remington, 6. AR-15 carrier available. I have both FZ and Barnes Precision NiB coated carriers I run in my suppressed, 300 BO, 450BM and 6. Assembled Bolt Carrier Group for AR-15/M16; Bolt carrier made of 8620 steel; Magnetic Particle Inspected and marked “MPI” Carrier has UCT Nickel Boron finish; UCT Nickel Boron coated before assembly for complete part coverage; Bolt made from Carpenter No. Environmental corrosion protection. UCT is the originator of EXO coating, a patented, high-performance nickel boron coating. 450 Bushmaster Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in. Nickel Boron (NiB) 8620 Tool Seel Enhanced Radius design (Angle Cut) Carrier with inside and out NiB Treatment 9310 Steel Bolt with inside and out NiB Treatment S7 Tool Steel Nitride Treated Extractor with Black Insert. 450 Bushmaster (Type 2). Comes without retail packaging. Heat Treated for Heavy Duty use. Nickel Boron Full Auto carrier 8620 steel. 56mm/300 BLK Nickel Boron (NiB) Complete Bolt Carrier Group with skeletonized design weighing only 8. This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec M16, M4, & AR15 upper receivers. 56mm NATO) Material: Carrier (8620 Steel), Bolt (C158) Finish: Nickel Boron Plated. Blemishes vary by type and location but may be a blemish in the carrier itself or may be a minor cosmetic blemish in the finish. Nickel boron coated to provide increased lubricity and much greater wear resistance than other finishes. Out Of stock online. Check out our AR-15 Nickel Boron Bolt Carrier Group Mil-Spec Bcg. Your Price: $250. Price: $149. 20" 416r Stainless Fluted barrel. AR15 Bolt Carrier Group Nickel Boron -. 56 Bolt Spikes HPT/MPI Bolt Assembly - Phosphate $ 69. Chromed bolt carrier groups were some of the first alternative BCGs to be released. These carriers have faceted sides. The XPB undergoes a 24-hour thermal cycle proprietary heat treatment and is finished with NiB-X (Nickel Boron) Coating. 8620 M16 style carrier Nickel Boron Coating Properly heat treated Final grind before plating; 9310 5. In excellent, like new condition. RISE Armament advanced bolt-carrier group (BCG) manufactured with precision and individually inspected to ensure high-level performance. The bolt is made 8620 steel and designed for 556/223 right handed shooters. Machined from 8620 Tool Steel (Carrier) and 158 Carpenter Steel (Bolt) Shrouded firing pin. Young Manufacturing, Inc. 223 BCGs can be used as a 300 BLK BCG. Finish: Nickel Boron. 223/300 BLK/. Nickel Boron Coating creates a permanently lubricious surface, harder than the substrate itself, which eliminates the need for oil, grease, or any type of wet lubrication for the life of the BCG. Quantity on Hand: 0. Rainier Arms has been putting out a lot of Bolt Carrier Groups lately. NiB-X M16/AR-15 Full Auto Bolt Carrier Group is manufactured by Military defense vendors to WMD tight tolerance specifications to provide the best bolt carrier group available. Assembled with 100% U. ab arms bolt carrier group 5. Complete Nickel Boron Bolt Carrier Group •Nickel Boron coating •Machined to mil-spec standards •Heat treated •Made in the USA. Bolt is shot Peened and HPT/MPI. M16 Full Auto Bolt Carrier w/Key - Nickel Boron - FTF Industries Inc specializes in MAC Cobray RPB SWD Parts & Accessories, AR15/M16 & AK47 Parts and accessories, Tactical Automatic Knives, Gunsmith's Tools & other very unique items. The 8620 steel carrier includes a properly machined Mil-Spec gas key that is completely Nickel Boron plated for the ultimate in smooth operation and easy cleanup. Guntec AR10 Bolt Carrier Group - Nickel Boron. Environmental corrosion protection.
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