MARK 12 MOD O M-LOK RIFLE
5.56 NATO cal., 18 in. Douglas stainless steel barrel w/M4 feed ramps, threaded muzzle brake, standard trigger, flip-up front and rear w/gas block sights, Mil-Spec A2 or B5 (new 2021) stock and buffer tube, Gen II octagonal free float M-LOK...