Mossberg 500

Guard dogs have to be fed, walked
groomed, trained. These you just oil.

High security is fine; high maintenance isn't. Enter the Mossberg® 500® and 590® Persuader® shotguns -- the pump-action shotguns you can count on for your security needs. They have the credentials and track record to prove it. In their commercial form, the Persuaders are virtual duplicates of the proven Mossberg® military 500® and 590® models -- the only pump-action shotguns ever to pass all stringent U. S. Military Mil-Spec 3443 standards. Use the 500® Persuader® at home and the Mariner® on the water – these guns are dependable and economical. Especially when you don't have to cover the added expense of chew toys.

http://www.mossberg.com/products/default.asp?id=5&section=products