Franklin armory HBAR 20 In.
5.56 NATO, 6.8 SPC, 7.62x39mm, or .450 Bushmaster cal., GIO, rifle length gas system, 20 in. HBAR contour barrel, threaded muzzle crown, flash hider or compensator (.450 Bushmaster only), 10, 20, 25, or 30 shot mag., A2 stock with storage c...