Experience optimal reliability and performance in your rifle when you choose the Wilson Combat Bolt Carrier Assembly for your 5.56 NATO rifle. This robust solution ensures rugged dependability, no matter the conditions. This bolt carrier assembly is precision machined from aerospace-grade 9310 tool steel, making it incredibly tough. The hardened steel 8620 carrier also features forward assist cuts for added reliability. Additionally, the gas key is properly staked to ensure it won't fail at the most inopportune moment. This bolt carrier assembly is used in Wilson's fully-built rifles and will provide unbeatable performance and durability for any shooter who needs dependability they can trust. FeaturesDrop in fit for any quality 5.56 case head based AR rifle (.223/5.56 NATO, .300 Blackout, .204 Ruger, 300 HAM'R or 7.62X40 WT)Precision machined from aerospace-grade 9310 tool steel for toughnessHardened steel 8620 carrier features forward assist cuts Properly staked gas key ensures rel...