The Mossberg 930 Autoloader is a gas operated autoloading shotgun that handles the full range of 2 3/4" and 3" shotshells, including magnum field and low brass target loads. 930 models feature a "quick empty" magazine button for easy unloading, a cocking indicator that protrudes from inside the trigger guard, and a drilled and tapped receiver for convenient scope base installation. This includes two barrels, and 18" barrel for security and a 28" smoothbore barrel for hunting.