The Mossberg 590RM Rotary Safety Selector shotguns utilize the first production double-stack magazines made for pump-actions - providing more efficient capacity vs. length than competitive designs. Plus, they combine time-tested Mossberg durability with ground-breaking new features like a rotary safety selector; a compact, ergonomically-designed forend, and an integrated barrel/heat shield combination. FeaturesIntegrated Heat ShieldAmbidextrous Safety SelectorEnlarged, Beveled Loading Port5 Position Adjustable StockPicatinny Optics Mount