When it comes to home-security firearms a simple-to-operate dependable firearm in a crisis can make a world of difference. For that reason Mossberg 930 Special Purpose autoloaders are finding their way into more homes as a primary defense firearm. All Mossberg 930 Special Purpose shotguns feature a self-regulating gas system that vents excess gas to aid in recoil reduction and eliminate stress on critical components. All 930 autoloaders chamber both 2 3/4 inch and 3-inch 12-gauge shotshells with easefrom target loads to non-toxic magnum loads to the latest sabot slug ammo. Magazine capacity is 7+1 on models with extended magazine tube 4+1 on models without. o complete the package each Mossberg 930 includes a set of specially designed spacers for quick adjustment of the horizontal and vertical angle of the stock bringing a custom-feel fit to every shooter.