American Tactical, Omni Hybrid Maxx, Semi-automatic Rifle, 5.56 NATO, 16" Threaded Barrel, 1/2X28 Thread Pitch, Matte Finish, Black, 30 Rounds, 2 Magazines 1/2X28 Threaded Barrel A2 Flash Hider Includes (2)-30 Round Magazine Product Description The ATI Omni Hybrid Maxx Rifle is a semi-automatic rifle chambered in 5.56 NATO, featuring a 16-inch barrel and a 30-round magazine capacity. It comes with a threaded barrel.