The Mossberg 590 Shockwave is a compact, pump-action firearm classified by the ATF as a pistol grip firearm — not a shotgun — making it a legally distinct and highly maneuverable platform built on Mossberg’s battle-proven 590 action. With an 18.5-inch blued barrel and an overall length of just 26.5 inches, it delivers serious 12-gauge capability in a uniquely compact package suited for home defense, truck storage, or as a distinctive addition to any collection. The raptor-style grip and proven Mossberg reliability have made the Shockwave one of the most recognized non-NFA firearms on the market.
Key Specifications
- The action is pump-action, built on Mossberg’s proven 590 platform.
- Chambered in 12 gauge with a 3-inch chamber for versatile ammunition selection.
- The barrel measures 18.5 inches with a blued finish for a classic, durable appearance.
- Total overall length is 26.5 inches, keeping the platform compact and easy to store.
- Capacity is 6+1 rounds, giving you meaningful on-board firepower.
- The safety is an ambidextrous top-tang design for fast, intuitive operation from either hand.
- Sights consist of a fixed bead front sight for straightforward target acquisition.
- A cylinder choke is included, optimizing performance with a wide range of loads.
- ATF classification is pistol grip firearm — not a shotgun — no NFA registration required.
- Shipping weight is approximately 7.2 pounds.
The 590 Shockwave punches well above its size. Whether you’re outfitting a vehicle, adding a compact defensive option to your home, or simply want one of the most iconic non-NFA firearms available, Mossberg’s fit, finish, and decades of law enforcement and military use back every round you send downrange. This is a purpose-built platform from a manufacturer that needs no introduction — get yours while it’s in stock.
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