Bolt Carrier Groups - 300 Blackout
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AT3™
AT3™ Black Nitride 5.56 Bolt Carrier Group with Breek Arms Warhammer AR-15 Charging Handle
AT3 Black Nitride BCG + Breek Warhammer AR-15 Charging Handle The AT3 Tactical BCG and Breek Warhammer Charging Handle pair perfectly to complete your AR-15 upper receiver. Save on this...8 Options -
AT3™RECOMMENDED
AT3™ AR-15 Bolt Carrier Group (BCG) – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier Group Getting a high quality bolt carrier group (BCG) that runs well in your rifle is... -
AT3™
AT3™ AR-15 Replacement Bolt – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Replacement AR-15 Bolt This AR-15 replacement bolt from AT3 Tactical easily replaces a broken bolt in your rifle. This bolt comes complete with extractor and ejector assemblies already installed... -
RECOMMENDED
KAK Industry K-SPEC Downward Venting 5.56 BCG with Dual Ejector Bolt
KAK Industry K-SPEC Downward Venting 5.56 BCG with Dual Ejector Bolt The K-SPEC Enhanced AR15 BCG is a high-quality bolt carrier group designed for use with both 5.56 and 300... -
Bear Creek Arsenal 5.56 NATO / .300 Blackout / .350 Legend AR-15 Bolt Carrier...
Bear Creek Arsenal 5.56 NATO / .300 Blackout / .350 Legend AR-15 Bolt Carrier Group - Nitride The Bear Creek Arsenal AR-15 Bolt Carrier Group (BCG) is a versatile component... -
AT3™
AT3™ Slick Side AR-15 Upper with Black Nitride 5.56 Bolt Carrier Group
AT3 Black Nitride Bolt Carrier Group with Slick Side Billet Upper - 8 Colors to Choose From Get a head start on your build with the AT3 Black Nitride Bolt...8 Options -
AT3™
AT3™ AR-15 Bolt Carrier Group – 5.56 NATO/.300 Blackout – Nickel Boron
Get the Performance You Need with a Nickel Boron Bolt Carrier Group Whether you're starting a fresh build or upgrading from stock, a bolt carrier group that performs reliably is... -
Aero Precision PRO Series AR-15 Black Nitride Bolt Carrier Group
Go PRO - The Best BCG that Aero Precision has to Offer The Aero Precision PRO 5.56 Bolt Carrier Group represents the best value for the most prolific, high-volume shooters.... -
Faxon Firearms 5.56 M16 Complete Bolt Carrier Group – Black Nitride
Black Nitride Faxon BCG for 5.56, .300 BLK, and .350 Legend This Faxon Firearms Bolt Carrier Group is a complete high-quality BCG upgrade designed for AR15/M16 platforms chambered in 5.56×45... -
Rise Armament Nickel Boron AR-15 Bolt Carrier Group
Rise Armament Nickel Boron AR-15 Bolt Carrier Group RISE Armament offers its signature AR-15 Bolt Carrier Group in a nickel boron coating, which provides unparalleled performance due to its unique... -
KAK Industry K-SPEC Dual Ejector 5.56 NATO AR-15 Bolt
KAK Industry K-SPEC Dual Ejector 5.56 NATO AR-15 Bolt The K-SPEC Enhanced AR15 Bolt is a high-quality bolt designed specifically for the 5.56/300 Blackout caliber. It incorporates a dual ejector... -
AT3™
AT3 Upper Receiver Black + AT3 Bolt Carrier Group + Breek Arms Warhammer Charging...
Complete your Next Build with AT3's Top-Selling Billet Upper Receiver and BCG plus the Trusted Breek Arms Warhammer Charging Handle Save by bundling vs purchasing the parts individually, plus free... -
Battle Arms Development Titanium AR-15 Bolt Carrier Group
Full Auto Titanium AR-15 Bolt Carrier Group Lighten your AR15 with a Titanium Bolt Carrier with ArmorTI coating, providing properties never seen before. A smooth machined surface with the coating... -
Battle Arms Development Standard M16 AR-15 Bolt Carrier Group
Battle Arms Development Standard M16 AR-15 Bolt Carrier Group Made with a variety of smoothly machined quality materials, this bolt carrier exceeds all mil-spec standards. A staked gas key and... -
Phase 5 Weapon Systems M16 Cut Bolt Carrier Group for AR-15 – .223/5.56 NATO
Upgrade Your AR15 with the Best Black Phosphate BCG from Phase 5 Tactical The Phase 5 Weapon Systems M16 Cut Bolt Carrier Group is a high-quality upgrade designed for M16/M4/AR-15... -
Radian Weapons Enhanced 5.56 NATO AR-15 Bolt Carrier Group
Radian Enhanced AR-15 Bolt Carrier Group The Radian Enhanced AR-15 Bolt Carrier Group features a redesigned bolt body to increase reliability. Radian re-profiled the BCG, changing key bearing surfaces to... -
Rise Armament Black Nitride AR-15 Bolt Carrier Group
Rise Armament Black Nitride AR-15 Bolt Carrier Group RISE Armament has produced an exceptional AR-15 Bolt Carrier Group (BCG) that is manufactured with the utmost precision and care. Each BCG... -
Aero Precision AR-15 Nickel Boron Bolt Carrier Group
Aero Precision Nickel Boron 5.56 BCG Aero Precision's NiB bolt carrier group features more than just a chrome-like finish. The bolt receives magnetic particle inspection (MPI), and is shot-peened to... -
Aero Precision AR-15 Black Nitride Bolt Carrier Group
Aero Precision 5.56 Nitride Bolt Carrier Group Aero Precision makes high quality parts suitable for any build, and this BCG is no exception. This part features a slick, easy-to-clean black...2 Options -
Bootleg Inc Four Position Adjustable AR-15 Bolt Carrier Group – 5.56 NATO/.300 BLK
High-Performance BCG Upgrade From Bootleg For Less Gas The Bootleg Inc Bolt Carrier Group is an innovative upgrade for Mil-Spec BCG that fits AR-15/M4 pattern rifles in .223 Remington, 5.56... -
HM Defense HMB Enhanced Bolt and Cam Pin for AR-15
Enhanced Durability AR-15 Bolt The HMB bolt has a very specific mission: to prevent your AR-15 bolt from snapping in half around the cam pin. This is the most common...Only$89.99 -
HM Defense Nitride M16 Bolt Carrier Group with HMB Bolt
Complete Nitride HMB Bolt Carrier Group This bolt carrier group goes above and beyond mil-spec, with a key upgrade to prevent broken bolts. This nitride bolt carrier group from HM...Only$164.99 -
Young Manufacturing Nitride M16 Bolt Carrier Group for AR-15
High Quality Nitride BCG by Young Manufacturing This bolt carrier group has all the features that make for a great BCG in a modern AR-15. A full M16 profile for...Only$188.96 -
Battle Arms Development Enhanced AR-15 Bolt Carrier Group
Battle Arms Development Enhanced AR15 BCG The Battle Arms Development Enhanced Bolt Carrier Group is a great choice for your AR15. Full-Auto Rated, build with 9310 steel, with a staked...Only$189.95
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