The Wilson Combat TR-BCA-SBN-556 Bolt Carrier Assembly for 5.56 NATO combines precision machining with field-proven reliability. Manufactured from aerospace-grade 9310 tool steel, the bolt itself delivers exceptional toughness, while the hardened steel 8620 carrier incorporates forward assist cuts for enhanced reliability. A black nitride finish provides durable corrosion resistance and a smooth operating surface.
This assembly functions as a drop-in fit for any quality AR rifle chambered in .223/5.56 NATO, .300 Blackout, .204 Ruger, or 7.62X40 WT. Every component undergoes precision machining, finishing, and hardening to maintain proper gas system function over extended use. The gas key is properly staked to mil-spec standards, eliminating the risk of failure during critical moments.
Whether assembling a custom build, upgrading an existing rifle, or servicing a duty weapon, the Wilson Combat TR-BCA-SBN-556 delivers the precision and longevity expected by professional shooters and serious enthusiasts. This same bolt carrier assembly is installed in Wilson Combat’s fully-built rifles, representing decades of American manufacturing expertise and proven field performance.
