The Wilson Combat Bolt Carrier Assembly (brand part no. TR-BCA-NB-308) is a nickel boron-coated bolt carrier group built for .308 Winchester, DPMS-pattern AR rifles. Wilson Combat precision-machines the bolt from Carpenter 158 steel and pairs it with an S7 tool-steel extractor and a hardened ejector for reliable case extraction under pressure. The 8620 hardened steel carrier runs smooth, without forward-assist cuts, and the gas key is properly staked for a lifetime of service in a custom .308 build.

Key Specifications

• Built for .308 Winchester, DPMS-pattern AR rifles.
• Bolt is precision-machined from Carpenter 158 steel.
• Includes an S7 tool-steel extractor for reliable case extraction.
• Fitted with a hardened ejector.
• Carrier is machined from 8620 hardened steel.
• Carrier runs smooth, without forward-assist cuts.
• Gas key is properly staked for long-term reliability.
• Finished in nickel boron for smooth cycling and easy cleaning.
• Ships at approximately 1.49 lb.

Frequently Asked Questions

Is this compatible with DPMS-pattern .308 AR rifles? Yes, it is built specifically for that pattern.

Does the carrier have forward-assist cuts? No, it runs smooth without them.

Is the gas key staked? Yes, it is properly staked for reliable long-term service.

Buy the Wilson Combat Bolt Carrier Assembly

Build a reliable .308 AR with a Carpenter 158 bolt and a properly staked, nickel boron-coated carrier. Order it from our Wilson Combat lineup of AR10 bolts for fast shipping from our Lubbock, Texas gun shop.