The 590 Shockwave SPX features a heat-shield, breacher muzzle, and side-saddle/top rail. The Shockwave Raptor bird’s head pistol grip is uniquely shaped to minimize felt recoil. Includes all the features that have made Mossberg pump-action the choice for millions worldwide: ambidextrous safety, dual extractors, positive steel-to-steel lockup, twin action bars, and a smooth operating anti-jam elevator.