Bolt Carrier Groups

The Breek Arms WARHAMMER MOD2 ambi charging handle is a simple and affordable upgrade that will substantially increase the use of your AR-15. Easily grab on either side of the handle and you can quickly charge your rifle even with large gloves with the...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is Carpenter 158, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt lugs are CNC...

The Breek Arms WARHAMMER MOD2 ambi charging handle is a simple and affordable upgrade that will substantially increase the use of your AR-15. Easily grab on either side of the handle and you can quickly charge your rifle even with large gloves with the...

The Breek Arms WARHAMMER MOD2 ambi charging handle is a simple and affordable upgrade that will substantially increase the use of your AR-15. Easily grab on either side of the handle and you can quickly charge your rifle even with large gloves with the...

The Spikes Tactical 9mm Enhanced Bolt can be used with both Glock and Colt pattern lowers.Features :Blow Back DesignBlack Nitride FinishLaser Engraved with ST Spider Logo

CMMG Barrel and Bolt Group Kit, 16.1" 5.7x28mm The 5.7x28mm Barrel and BCG Kit allows you to build an AR in 5.7x28mm using CMMG’s patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback...

CMMG Barrel and Bolt Group Kit, 8" 5.7x28mm The 5.7x28mm Barrel and BCG Kit allows you to build an AR in 5.7x28mm using CMMG’s patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not...

CMMG Barrel and Bolt Group Kit, 16.1" 5.7x28mm The 5.7x28mm Barrel and BCG Kit allows you to build an AR in 5.7x28mm using CMMG’s patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...

Get a high quality Bolt Carrier Group for your AR with this superb .308/7.62 Nickel Boron BCG from ACME Machine ! This .308/7.62 Nickel Boron BCG with Forward Assist features an 8620 Tool Steel Carrier and 9310 Carpenter Steel Bolt, with a properly...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...

Toolcraft BCG Nickel Boron AR15 / M16 Auto Bolt Carrier Group 9310 MPI Tested All manufacturing and coating is done by Toolcraft. 100% Made in USA and includes Lifetime Warranty from Toolcraft. If ever a problem, simply call Toolcraft and they will take...

Toolcraft BCG Nickel Boron AR308 Auto Bolt Carrier Group 9310 Alloy Steel MPI Tested All manufacturing and coating is done by Toolcraft. 100% Made in USA and includes Lifetime Warranty from Toolcraft. If ever a problem, simply call Toolcraft and...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is Carpenter 158, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt lugs are CNC...

The  enhanced  bolt  carrier  is  designed  to  reduce  carrier  tilt/cant  during  recoil  and   increasing  reliability  by  strategically  relocating  key...

ACME Machine has been in business since 1976 crafting highly precise components. All ACME BCG parts are of the highest quality and 100% made in America. ACME has taken their line of precision AR components and added a Nickel Boron coating to provide...