The Armscor Rock Island M30 M5 12ga shotgun is built from 4140 ordnance steel. It includes polymer stock and forend, a strong vented heat guard with a 20″ barrel, and is built with an internal shell caddy with a 5-round capacity. This shotgun is durable and can take a beating while functioning in the harshest environments. Chambered for both 2 3/4″ and 3″ shot shells. These shotguns were originally purchased from Davidson’s, which comes with their transferable lifetime guarantee. If you or any other owner has a problem with this gun, you can send it back to Davidson’s and they will fix or replace the gun for free. Here at Sin City Tactical, we want our customers to be guaranteed quality assurance on every product we sell.