The Mossberg 590R is a pump-action shotgun chambered in 12 gauge with a 3-inch chamber and an 18.5-inch barrel. It has an Olive Drab Green Cerakote finish on both the barrel and the steel receiver, paired with a heat shield and AR Mil-Spec adjustable black stock. Magpul polymer grip and MBUS sights are fitted. 
 

Key Specifications 

• Brand: Mossberg 
• Model: 590R 
• Caliber: 12 Gauge 
• Action: Pump Action 
• Capacity: 6+1 rounds 
• Barrel Length: 18.5 inches 
• Color/Finish: Olive Drab Green Cerakote 
   

Detailed Features 

• 18.5-inch barrel with Olive Drab Green Cerakote and heat shield 
• Cerakote-coated steel receiver in OD Green 
• AR Mil-Spec adjustable black stock with Magpul polymer grip 
• MBUS backup sights included 
• 3-inch chamber

Owners of the 590R appreciate the Cerakote finish for its corrosion resistance in field and wet conditions. The OD Green color is popular with buyers who want a tactical-styled shotgun without a flat black finish, and the consistency between the receiver and barrel coating gets regular positive comments.

The Magpul grip and AR-style adjustable stock make the 590R fit a wider range of shooter sizes than a fixed-stock shotgun. Recoil management is a common discussion point: some find the configuration comfortable for extended range sessions, while others note that a 12 gauge pump with a pistol grip stock transfers recoil differently than a traditional stock and takes a session or two to adapt to.

The MBUS sights are appreciated as a ready-to-go addition without extra cost, though a few owners swap them for a fixed or raised rail mount to better fit an optic. Overall the 590R is seen as a solid pump that ships with more useful accessories than the base 590 variants, though some feel the price premium over a plain 590 is higher than the accessory value justifies.