AR15 6.5 Grendel 20" Upper Receiver Grendel 6.5 AR15 Bolt Action Upper Bolt

This AR-15 Complete 6.5 Grendel Bolt Action Style rifle length upper has a 20" heavy barrel and a Black Nitride finish with a 1:8 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 6.5 Grendel upper is compatible with any mil-spec AR-15 lower.