Kriss Defiance DMK22 Standard Black .22LR semi auto rifle. 16.5" barrel, threaded 1/2"x28 UNEF and fitted with factory muzzle brake. Supplied with 15 round magazine, flip up sights and adjustable length stock. Compatible with MP15-22 type magazines and Ruger 10-22 barrels! Last round hold open facility and working forward assist. Full metal upper & lower construction.