This AR-15 complete 12.7x42 rifle length upper has a 10.5" parkerized Heavy barrel, and features a 1:20 twist rate, with a pistol length gas system. It includes a 9.5" MLOK Rail, an M4 flat-top billet upper receiver, a AR15 bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 12.7x42 is compatible with any mil-spec AR-15 lower.
BCG Included
