Savage Arms 22439: The Stevens 320 Security pump shotgun uses a proven rotary bolt design and dual slide bars. It is a bottom load, right eject, and has a tube magazine with a 5-round capacity. The 320 Security has an 18.5\" carbon steel barrel with a cylinder bore and a blued metal finish. This 20 gauge model has a ghost ring sight and black synthetic buttstock with a pistol grip.