ZM-4 .300 Blackout
.300 AAC Blackout cal., GIO, 16 in. blue or stainless steel barrel w/Trident flash hider, A3 flat-top alloy receiver, forged front sight base w/bayonet lug, M4 handguard w/heat shield, Hogue pistol grip, 6-pos. collapsible M4 stock, matte b...