Built on Mossberg’s proven pump-action design, each 590 Shockwave features an overall length of 26.37 inches; 14-inch heavy-walled barrel; non-binding twin action bars; positive steel-to-steel lock-up; an anti-jam elevator; dual extractors; and ambidextrous top-mounted safety. 590 Shockwaves also feature convenient magazine clean-out cap; drilled and tapped anodized aluminum receiver; cylinder bore barrel with a single brass bead sight; and sling swivel studs. Unique to the 590 Shockwave models is a “bird’s head†shaped-profile grip that allows for greater control while lessening felt recoil.