This Wilson Combat Bolt Carrier Assembly is a polished nickel boron BCG offering a drop-in fit for any quality 5.56 case-head-based AR rifle, including .223/5.56 NATO, .300 Blackout, .204 Ruger, 300 HAM’R, and 7.62×40 WT (brand part no. TR-BCA-PNIB). Wilson Combat precision machines it from aerospace-grade 9310 tool steel for toughness, and the hardened steel 8620 carrier includes forward assist cuts for compatibility with forward-assist uppers. The gas key is properly staked for reliable long-term performance, and the ejector and extractor are both machined for consistent case handling. This is the same bolt carrier assembly Wilson Combat uses in its own fully-built rifles, so it carries the fit and reliability of a proven factory build.

Key Specifications

• Drop-in fit for any quality 5.56 case-head-based AR rifle, including .223/5.56 NATO, .300 Blackout, .204 Ruger, 300 HAM’R, and 7.62×40 WT.
• Polished nickel boron coating provides easy cleanup and corrosion protection.
• Precision machined from aerospace-grade 9310 tool steel for toughness.
• Hardened steel 8620 carrier features forward assist cuts for compatibility with forward-assist uppers.
• Properly staked gas key ensures reliable, long-term performance.
• Machined ejector and extractor for reliable case handling.
• Used in Wilson Combat’s own fully-built rifles.

Frequently Asked Questions

What cartridges is this bolt carrier assembly compatible with? Any quality 5.56 case-head-based AR rifle, including .223/5.56 NATO, .300 Blackout, .204 Ruger, 300 HAM’R, and 7.62×40 WT.

What finish does this BCG use? A polished nickel boron coating for easy cleanup and corrosion protection.

Does this BCG work with a forward-assist upper? Yes, the hardened 8620 steel carrier includes forward assist cuts.

Buy the Wilson Combat Nickel Boron 5.56 Bolt Carrier Assembly

Order this bolt carrier assembly from our Lubbock, Texas gun shop and drop in the same BCG Wilson Combat uses in its own rifles. Browse our full AR bolt carrier groups lineup for more finishes. Ships fast from a Lubbock, TX gun shop.