The Mossberg 590S Shockwave is a 12 gauge pump-action shotgun with an 18.5-inch cylinder-bore barrel, a 3-inch chamber and a 9+1 tubular capacity. It weighs 5.5 pounds and measures 30.75 inches overall, with a matte blued finish and bead sights. The Raptor grip and corn-cob forend with strap shape its handling, and a top-mounted ambidextrous safety sits within reach from either side. The item is listed as new.

The supplier positions the 590S for close-quarters handling, vehicle storage and camp use, and the 30.75-inch overall length supports that. A Montana owner who wants a compact shotgun for close range gets a 9+1 capacity without a long profile. The dual extractors and twin action bars listed for the 590 series support reliable pump cycling.

Key features

• 18.5-inch cylinder-bore barrel, 3-inch chamber
• 9+1 tubular magazine capacity
• Raptor grip and corn-cob forend with strap
• Dual extractors, twin action bars, steel-to-steel lockup
• Top-mounted ambidextrous manual safety

Firearms ship to the Montana FFL dealer you choose, where you complete Form 4473 and the background check before pickup.