***USED firearm please see photos for detail*** The Chongqing Jianshe MK12AK is a tactical, magazine-fed semi-automatic shotgun developed by Chongqing Jianshe Industries, a Chinese state-owned defense manufacturer. Designed with modern combat and law-enforcement applications in mind, it blends the rugged reliability of traditional shotguns with the ergonomics and styling of AR-platform rifles. Built around a gas-operated system, the MK12AK is engineered to deliver consistent cycling and reduced recoil, making it suitable for rapid follow-up shots. Like other Jianshe tactical shotguns, it typically features a detachable box magazine, allowing for quicker reloading compared to conventional tube-fed designs. Its construction often incorporates lightweight alloy receivers and durable polymer components to balance strength and handling. Overall condition very good with some wear. Includes one 5 round magazine. -AB