Mossberg 590 Shockwave SPX | 12ga | 14.375in | 50648

The Mossberg 590 Shockwave SPX is a compact, pump-action 12 gauge designed and built by Mossberg. It pairs a Shockwave Raptor bird’s‑head grip and a short-barrel configuration with a receiver-mounted side saddle, barrel heat shield and a removable top rail. The platform keeps familiar 590 pump-action controls such as an ambidextrous tang safety and dual extractors.

This configuration is intended for close-range recreational shooting and utility or transport applications where a compact, robust 12-gauge platform is desirable. It is suitable for range practice and general-purpose small-boat or vehicle-borne utility tasks.

Product Specifications

• The manufacturer is Mossberg.
• The model is the 590 Shockwave SPX.
• The manufacturer’s part number is 50648.
• The UPC is 015813506489.
• The gauge is 12 Gauge.
• The action type is Pump Action.
• The chamber is rated for a 3″ shell.
• The finish is listed as Blued / Matte Blued.
• The stock and forend material is Black synthetic.
• The grip type is the Shockwave Raptor Grip.
• Included features are a receiver-mounted side saddle with polymer shellholders, a removable top rail and a barrel heat shield.
• The muzzle is described as a Breacher type.
• The sights are a fixed bead front and bead rear configuration.
• The stock style is listed as field.
• The overall length is listed as 26.37 inches.

This Shockwave SPX brings Mossberg pump-action features into a compact package: ambidextrous top-tang safety, dual extractors, twin action bars and a robust anti-jam elevator. The receiver-mounted side saddle ships with polymer shellholders that can be mounted on either side, and the removable top rail provides options for optics or other accessories (sights and shells not included).

Designed for users who value a compact, mechanically simple shotgun, the 590 Shockwave SPX offers a short-handling footprint with standard Mossberg pump-action controls. Its combination of synthetic furniture, practical accessory mounting and proven action make it a capable option for range shooting and utility use.

Users commonly praise the platform for its reliable pump-action operation and its compact handling. Many owners also note the Raptor grip helps reduce perceived recoil in this configuration.

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