ROCK RIVER ARMS LAR-15 BTB CARBINE
5.56 NATO cal., 16 in. CM HBAR barrel, A2 flash hider, SST, NSP flip-up front and rear sights, NSP2 6-pos. CAR stock, NSP overmolded pistol grip, low profile gas block, forged A4 upper receiver and forged LAR-15 lower receiver, NSP CAR leng...