The 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. – Ambidextrous Rotary Safety Selector – Chisel Folding Stock Mount allows adjustable LOP stock to be folded completely along reverse side of receiver – Premium Cerakote polymer-ceramic receiver for superior abrasion and wear resistance and added anti-corrosion protection – 18.5 Barrel with Integrated Heat Shield – Enlarged Beveled Loading Port with Exposed Follower – Flat Profile Trigger with smooth crisp break – 8-Position Adjustable Stock w/MOE+ Pistol Grip Interchangeable Recoil Pad 2 QD Ports – Top Picatinny Rail optimized for Optics – Gauge 12 Gauge – Action Type Pump-Action – Chamber Size 2.75 – Usage Security – Barrel Length 11.5 – Barrel Finish Parkerized – Choke Accu-Choke System – Cylinder Bore Choke Installed – Capacity 10+1 – Length 30.5 – LOP 12.5-16.5 – LOP Type Adjustable – Sights Picatinny Rail – Stock 8-Pos Adj Stock w/interchangeable pad Chisel Folding Stock Mount and Buffer Tube (Black) – Trigger Flat Profile – Safety Rotary Safety Selector – Weight 7.6