This AM-15 Optic Ready Rifle is chambered in .223/5.56 and has a 16" Chrome Moly Vanadium steel barrel with an M4 contour and 1:8" twist. The receivers are forged, A2 handguard, 6-position buttstock, A2 pistol grip, A2 Flash Hider, Anderson's proprietary 17-4 stainless steel match grade trigger and hammer, standard charging handle, single point sling mount, one 30-round magazine.