AR15 16" 300 BLK Upper Receiver 300 Blackout AR15-Upper AR15-Upper

This AR-15 complete 300 Blackout rifle length upper has a 16" heavy barrel with a 416R stainless steel finish, and features a 1:8 twist rate, with a carbine length gas system. It includes a 15" MLOK rail, an M4 flat-top forged upper receiver, a bolt carrier group, a flash hider, and a rear handle. This 300 Blackout upper is compatible with any mil-spec AR-15 lower.