This Colt Modular Carbine LE901-16S is a semi-auto rifle which fires the .308 round. It has a matte black finish and a 16" barrel. This brand new rifle has a monolithic upper with rails, fold-up front and rear sights, a collapsible VLTOR stock, sling, cleaning kit, sling swivels, rail covers, AAC, flash hider, bayonet lug, and 223 conversion kit. It comes with one 20 round Pmag, lock, and a box. All you need is a complete .223 upper and mag, sold separate.