The Mossberg 590 Shockwave SPX in 12 gauge (brand part no. 50708) is a pump-action platform built around an 18.5-inch barrel with a bird’s-head grip and no shoulder stock, placing it in the ATF’s standard firearm classification rather than a Title I long gun. Mossberg finishes the Shockwave SPX in blue with a black synthetic grip and pairs a bead front sight. Among pump-action shotguns in the pump-action shotguns category, the Shockwave SPX favors shooters who want a compact, maneuverable 12-gauge firearm and are comfortable with its standard FFL-transfer classification.

Key Specifications

• Chambered in 12 gauge.
• Operates as a pump-action firearm.
• Features an 18.5-inch barrel.
• Built with a bird’s-head grip and no shoulder stock, classified as a firearm rather than a shotgun.
• Equipped with a bead front sight.
• Finished in blue with a black synthetic grip.

Frequently Asked Questions

Is this classified as a shotgun or a firearm? Its bird’s-head grip and lack of a shoulder stock place it in the ATF’s standard firearm classification, transferred through an FFL like any other firearm.

What barrel length does it use? An 18.5-inch barrel.

Buy the Mossberg 590 Shockwave SPX 12 Gauge

A compact, maneuverable 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.