The Mossberg 590S Shockwave is a compact 12 gauge pump-action firearm with a 14.375-inch barrel and a Raptor birdshead grip (Mossberg part no. 51601). It is built on the 590 platform with a heavy-walled cylinder bore barrel, a corn-cob forend with a hand strap and an overall length of 26.37 inches. The 3-inch chamber accepts 1-3/4 inch, 2-3/4 inch and 3-inch shells in mixed combinations. It is a maneuverable pump-action for range use and training. Mossberg fits it with a bead front sight and a matte blued finish.

Key Specifications

• Gauge is 12 gauge, the most common shotgun gauge with a wide range of loads.
• The barrel is 14.375 inches, a heavy-walled cylinder bore design that keeps the firearm compact.
• The chamber is 3 inches and accepts 1-3/4 inch, 2-3/4 inch and 3-inch shells in mixed combinations.
• Capacity is 8+1 with 1-3/4 inch shells, 5+1 with 2-3/4 inch shells and 4+1 with 3-inch shells, so the count depends on the shell length.
• The grip is a Raptor birdshead grip, which gives control without a full-size stock.
• The forend is a corn-cob design with a hand strap, which helps keep the support hand in place.
• A top-mounted manual safety is easy to operate from either side.
• The sight is a bead front sight with cylinder bore, a simple setup for fast, close-range aiming.
• The action is a pump action with twin action bars, dual extractors and an anti-jam elevator, which supports smooth cycling.
• The finish is matte blued, a low-glare surface that suits a working firearm.

Frequently Asked Questions

How many shells does the Shockwave hold? Capacity depends on the shell length: 8+1 with 1-3/4 inch shells, 5+1 with 2-3/4 inch shells and 4+1 with 3-inch shells.

Can I mix different shell lengths? Yes. The 3-inch chamber accepts 1-3/4 inch, 2-3/4 inch and 3-inch shells in mixed combinations.

Does it have a stock? No. The Shockwave uses a Raptor birdshead grip instead of a stock, with a corn-cob forend and hand strap.

Buy the Mossberg 590S Shockwave 12 Gauge Firearm, 14.375-Inch Barrel

The Shockwave is a very short pump-action 12 gauge, and the 590S version has the proven 590 action behind it. The birdshead grip and hand strap give it a distinctive layout. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more pump action shotguns while you are here.