Mossberg 590 Shockwave | 12ga | 18.5″ | 50639

The Mossberg 590 Shockwave is a compact pump-action 12-gauge platform built around a short 18.5" heavy-walled barrel and a distinctive bird’s-head Raptor grip. It includes a 3" chamber and a front bead sight, with a corncob-style forend and strap. This configuration is oriented toward shooters who need a compact, robust pump-action for range training and recreational shooting.

Product Specifications

• The manufacturer is Mossberg.
• The model is the 590 Shockwave.
• The manufacturer part number is 50639.
• The firearm is chambered in 12 Gauge.
• The action type is Pump Action.
• The barrel measures 18.5 inches and is heavy-walled.
• The maximum chamber size is 3 inches.
• The barrel is described as a heavy-walled type.
• The sighting system is a front bead.
• The bore/choke is listed as cylinder bore.
• The stock/forend configuration is a Raptor bird’s-head grip with corncob forend and strap.
• The product series is the Shockwave.
• The ATF model and type are listed as 590 and Pistol Grip Firearm, respectively.
• The country of origin is US.
• The UPC is 015813506397.

Built from steel components and synthetic furniture, the 590 Shockwave delivers a compact, straightforward pump action suitable for controlled patterning and short-range handling drills at the range. Its simple controls and proven Mossberg action make it easy to operate and maintain. For shooters seeking a compact 12-gauge platform for training or recreational use, the 590 Shockwave is a practical, no-nonsense option.

Owners commonly praise its compact profile and report that the pump-action is reliable and smooth.

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