AR-15 Bolt Carrier Groups
High-quality AR15 Bolt Carrier Group (BCG) at Affordable Prices
The bolt carrier group controls all functions of the AR15 – chambering, firing, and extracting spent rounds. Choose wisely with AT3 Tactical.
The majority of weapon failures stem from issues with the bolt carrier group, and a good bolt carrier group can keep the failures to a minimum.
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- Bolt Carrier Groups - AT3 Tactical (12)
- Bolt Carrier Groups - Faxon Firearms (10)
- Bolt Carrier Groups - JP Enterprises (9)
- Bolt Carrier Groups - CMMG (8)
- Bolt Carrier Groups - LBE Unlimited (6)
- Bolt Carrier Groups - Aero Precision (6)
- Bolt Carrier Groups - Odin Works (5)
- Bolt Carrier Groups - KAK Industry (5)
- Bolt Carrier Groups - Bear Creek Arsenal (5)
- Bolt Carrier Groups - Battle Arms Development (5)
- Bolt Carrier Groups - Young Manufacturing (3)
- Bolt Carrier Groups - WMD (3)
- Bolt Carrier Groups - Rise Armament (3)
- Bolt Carrier Groups - Luth-AR (3)
- Bolt Carrier Groups - LANTAC USA (3)
- Bolt Carrier Groups - HM Defense (2)
- Bolt Carrier Groups - Failzero (2)
- Bolt Carrier Groups - Breek Arms (2)
- Bolt Carrier Groups - Wilson Combat (1)
- Bolt Carrier Groups - Spike's Tactical (1)
- Bolt Carrier Groups - Sons of Liberty Gun Works (1)
- Bolt Carrier Groups - Radian Weapons (1)
- Bolt Carrier Groups - Phase 5 (1)
- Bolt Carrier Groups - Midwest Industries (1)
- Bolt Carrier Groups - Kaw Valley Precision (1)
- Bolt Carrier Groups - Bootleg Inc. (1)
- Bolt Carrier Groups - Angstadt Arms (1)
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- Bolt Carrier Groups - .223/5.56 (37)
- Bolt Carrier Groups - 300 Blackout (24)
- Bolt Carrier Groups - .350 Legend (17)
- Bolt Carrier Groups - .308/AR-10 Parts (11)
- Bolt Carrier Groups - 9mm (11)
- Bolt Carrier Groups - 6.5 Creedmoor (10)
- Bolt Carrier Groups - 6.5 Grendel (10)
- Bolt Carrier Groups - 7.62x39 (5)
- Bolt Carrier Groups - 6mm ARC (4)
- Bolt Carrier Groups - .450 Bushmaster (2)
- Bolt Carrier Groups - .458 SOCOM (2)
- Bolt Carrier Groups - 45 ACP (1)
- Bolt Carrier Groups - 5.7x28mm (1)
- Bolt Carrier Groups - .224 Valkyrie (1)
- Bolt Carrier Groups - 22LR (1)
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- Bolt Carrier Groups - Black (26)
- Bolt Carrier Groups - Stainless (9)
- Bolt Carrier Groups - Flat Dark Earth (3)
- Bolt Carrier Groups - Gray (3)
- Bolt Carrier Groups - Ranger Green (2)
- Bolt Carrier Groups - Burnt Bronze (1)
- Bolt Carrier Groups - OD Green (1)
- Bolt Carrier Groups - Pink (1)
- Bolt Carrier Groups - Titanium (1)
- Bolt Carrier Groups - Tungsten (1)
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AT3™RECOMMENDEDSale!
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™Sale!
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... -
AT3™Sale!
AT3™ .22LR Dedicated Stainless Steel AR-15 Bolt Carrier Group
Build The Perfect Plinker - AT3 .22LR Dedicated Stainless Steel AR-15 BCG For dedicated .22LR AR-15 builds, this stainless steel bolt carrier group from AT3 delivers outstanding performance. Machined to...$164.99Only$140.24 -
AT3™Sale!
AT3™ Mil-Spec AR-15 Firing Pin
AT3 Hard Chrome Firing Pin The AT3™ Mil-Spec AR-15 Firing Pin is a premium replacement component for your AR-15. This component is guaranteed to fit and function in your AR... -
AT3™Sale!
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... -
AT3™Sale!
AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel Type II – Nickel Boron
Run Your 6.5 Grendel or 6mm ARC Upper Right with a NiB BCG It's important to have a bolt carrier group that has everything you need. MPI inspected bolt, properly... -
AT3™Sale!
AT3 Tactical™ 9mm Bolt Carrier Group – Nitride
High-Quality Black Nitride Bolt Carrier Group For Your 9mm Build This AT3 Tactical™ 9mm Bolt Carrier Group features meticulous machining and a high-quality finish for a lifetime of use. This...$124.99Only$106.24 -
AT3™Sale!
AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel Type II – Black Nitride
Complete your hard-hitting 6.5 Grendel or 6mm ARC upper with a Black Nitride Bolt Carrier Group Our new 6.5 Grendel Bolt Carrier Group features a black salt bath nitride finish,... -
AT3™Sale!
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...$249.99Only$212.49 -
AT3™Sale!
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 -
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™Sale!
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 -
Luth-AR One Piece Helical Gas Ring for AR-15 Bolts
AR-15 Helical Gas Ring The Luth-AR One Piece Helical Gas Ring for AR-15 rifles seals your gas system more effectively than older style gas rings. This stainless steel coil doesn't... -
CMMG AR-15 Bolt Rehab Parts Kit
Easily Repair your AR-15 Bolt with CMMG Parts The bolt is one of the most crucial pieces of your rifle, perhaps the most. If your bolt fails, for whatever reason,... -
AT3™Sale!
AT3™ Black Nitride 9mm Bolt Carrier Group with Breek Arms Warhammer AR-15 Charging Handle
AT3 9mm Nitride BCG + Breek Warhammer AR-15 Charging Handle Save on this bundle to take your PCC build to the next level, with a reliable 9mm bolt and excellent...8 Options -
Bear Creek Arsenal 7.62×39 / 12.7×42 AR-15 Bolt Carrier Group – Nitride
Bear Creek Arsenal 7.62x39 / 12.7x42 AR-15 Bolt Carrier Group - Nitride The Bear Creek Arsenal 7.62x39 / 12.7x42 bolt carrier group is compatible with a wide range of AR-15... -
Bear Creek Arsenal 6.5 Grendel Type II AR-15 Bolt Carrier Group – Nitride
Bear Creek Arsenal 6.5 Grendel Type II AR-15 Bolt Carrier Group - Nitride The BC-15 is a high-quality rear charging bolt carrier group that is designed specifically for use with... -
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.... -
LBE Unlimited AR-15 Bolt Gas Rings, Set of 3
AR-15 Bolt Gas Rings (set of 3) Gas rings are an essential part of the AR-15 Bolt and are often some of the first parts to need replacement. Easy to... -
Odin Works .223/5.56 Black Nitride AR 15 Bolt Carrier Group
High-Quality BCG Upgrade For .223/5.56 & 300 Blackout The Odin Works .223/5.56 Bolt Carrier Group is a high-quality upgrade for Mil-Spec BCG that fits AR-15/M4 pattern rifles in .223 Remington,... -
Faxon Firearms 9mm Nitride Bolt Carrier Group – Glock & Colt Compatible
Proven, Reliable, and Compatible with Glock and Colt Lowers Faxon's 2nd Generation 9mm Bolt Carrier Group stands above its competition as a reliable part with wide compatibility. The enhanced geometry... -
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... -
Battle Arms Development Enhanced AR-15 Cast Bolt Catch
Battle Arms Development Enhanced AR-15 Cast Bolt Catch The Battle Arms Development Enhanced AR15 Cast Bolt Catch is an easy to install upgrade to a standard mil-spec bolt catch. The...
Other AR-15 Upper Receiver Components:
AR 15 Charging Handles
AR 15 Gas Blocks & Tubes
AR 15 Handguards & Quad Rails
AR-15 Barrels
AR-15 Bolt Carrier Groups
AR-15 Front Grips
AR-15 Upper Receivers and Parts
Muzzle Devices
AR-15 Handguard Accessories