The Mossberg 590S Shockwave SPX in 12 gauge (brand part no. MOSG51601) is a factory-classified firearm built around a 14.375-inch barrel with a bird’s-head Raptor grip in place of a shoulder stock. Mossberg builds the Shockwave SPX with a matte blue cylinder-bore barrel and a corn-cob forend for a distinctive, purpose-built look. Because it ships without a shoulder stock and its barrel is under 18 inches, the ATF classifies the Shockwave SPX as a standard firearm rather than a Title I shotgun, and it transfers through a standard FFL like any other firearm on this site. Among pump-action shotguns in the pump action shotguns category, the Shockwave SPX favors shooters who want Mossberg’s compact, ATF-classified pump platform.

Key Specifications

• Chambered in 12 gauge, accepting 1.75 to 3-inch shells.
• Operates as a pump-action firearm.
• Features a 14.375-inch cylinder-bore barrel.
• Feeds from a magazine with an 8-round capacity.
• Fitted with a bird’s-head Raptor grip in place of a shoulder stock.
• Built with a corn-cob textured forend.
• Barrel finished in matte blue.
• Classified by the ATF as a standard firearm, not a Title I shotgun.

Frequently Asked Questions

Why is this called a firearm instead of a shotgun? Its sub-18-inch barrel and bird’s-head grip (no shoulder stock) place it in the ATF’s firearm classification rather than Title I shotgun, though it still transfers through a standard FFL.

What is the magazine capacity? 8 rounds.

Buy the Mossberg 590S Shockwave SPX 12 Gauge

A compact, ATF-classified 12 gauge pump firearm is exactly what the Shockwave SPX delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.