*30% less weight with split rail than regular MLOK !
This AR-15 .300 Blackout Complete upper has a 10.5" parkerized heavy barrel, and features a 1:8 twist, with a pistol length gas system. This .300 Blackout AR-15 also includes 10" MLOK split rail, an M4 flat-top 7075 forged aluminum upper receiver, a AR15 Bolt Carrier Group, Flash Hider, right-side charging (Gen2) handle (patent protected). This .300 Blackout will work on a mil-spec AR-15 multicaliber lower. !
