This AR-15 complete 12.7x42 rifle length upper has an 18" parkerized Heavy barrel, and features a 1:20 twist rate, with a mid-length gas system. It includes a 15" MLOK Rail, an M4 flat-top billet upper receiver, a AR15 bolt carrier group, and a side charging (Gen 2) handle (patent pending). This 12.7x42 is compatible with any mil-spec AR-15 lower. This has the new handguard.
BCG Included
