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. READ MORE
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- Bolt Carrier Groups - AT3 Tactical (11)
- 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)
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- Bolt Carrier Groups - Black (26)
- Bolt Carrier Groups - Stainless (8)
- 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™St. Patty's 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™St. Patty's 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... -
RECOMMENDEDSt. Patty's Sale
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... -
AT3™St. Patty's 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™St. Patty's 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™St. Patty's 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™St. Patty's 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,... -
St. Patty's Sale
KAK Industry K-SPEC Dual Ejector 7.62×39 AR-15 Bolt
KAK Industry K-SPEC Dual Ejector 7.62x39 AR-15 Bolt The K-SPEC dual ejector system is a cutting-edge feature that sets it apart from other AR15 bolts on the market. It utilizes... -
St. Patty's Sale
KAK Industry K-SPEC Downward Venting 7.62×39 BCG with Dual Ejector Bolt
KAK Industry K-SPEC Downward Venting 7.62x39 BCG with Dual Ejector Bolt The K-SPEC BCG is precision machined from high-quality steel and features a durable black nitride finish for enhanced corrosion... -
St. Patty's Sale
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... -
St. Patty's Sale
Rise Armament Black Nitride AR-10 Bolt Carrier Group
Rise Armament Black Nitride AR-10 Bolt Carrier Group RISE Armament is a company that produces high-quality and advanced bolt carrier groups for AR15s and AR10s with precision machining. This AR-10... -
St. Patty's Sale
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... -
NEW
KAK Industry Enhanced .45 ACP Bolt Carrier Group with Tungsten Weight
KAK Industry Enhanced .45 ACP Bolt Carrier Group - Optimal Performance Guaranteed Upgrade your firearm with the KAK Industry Enhanced .45 ACP Bolt Carrier Group, a testament to reliability, innovation,... -
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™St. Patty's 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... -
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.... -
NEW
Luth-AR Field Repair Kit
Luth-AR Field Repair Kit This field repair kit for your AR-15 has lots of essential components that are useful for making on-the-spot repairs or adjustments in the field. These kits... -
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... -
Bear Creek Arsenal .458 SOCOM / .450 Bushmaster AR-15 Bolt Carrier Group – Nitride
Bear Creek Arsenal .458 SOCOM / .450 Bushmaster AR-15 Bolt Carrier Group - Nitride For your next big-bore AR15 build, the Bear Creek Arsenal .458 SOCOM / .450 Bushmaster Bolt... -
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...
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