AR15 20" Upper Receiver 5.56 AR15 Bolt Action Upper Bolt-Action Bolt

This AR-15 Complete 5.56 NATO Bolt Action Style rifle length upper has a 20" Heavy barrel with a parkerized finish, and features a 1:7 twist rate. It includes a 15" MLOK rail, an M4 flat-top billet upper receiver, a bolt carrier group, a flash hider, and a right-side bolt action style charger. This 5.56 Nato upper is compatible with any mil-spec AR-15 lower.