Mossberg 590R 12 Gauge Pump Shotgun, 18.5 Inch Barrel

Description

We present the Mossberg 590R as a 12 gauge pump action shotgun with an 18.5 inch stand-off barrel and integrated heat shield. Its configuration includes an adjustable stock, a Magpul MOE pistol grip, and a rotary safety selector. The shotgun also includes a flat profile trigger and an upper Picatinny rail.

Key Specifications

• The shotgun uses a pump action operating system with a manual repeating design.
• It is chambered for 12 gauge ammunition and accepts shells up to the specified chamber size.
• The chamber measures 3 inches, supporting 3-inch shotgun shells.
• The stand-off barrel measures 18.5 inches and includes an integrated heat shield.
• The barrel uses a cylinder bore configuration for a consistent, non-adjustable choke profile.
• The stock provides five-position adjustment for length-of-pull changes.
• The shotgun has a rotary safety selector and a flat profile trigger.
• A Picatinny rail is positioned on top for compatible accessories.
• The furniture combines a black synthetic stock with a Magpul MOE pistol grip.
• The receiver is listed as aircraft-grade aluminum for the stated receiver construction.

The adjustable stock and interchangeable recoil pad give this configuration useful fit options, while the MOE pistol grip and compact forend shape the handling interface. An integrated heat shield is built into the barrel assembly, and the product data also lists an M-LOK adapter for accessory compatibility. We like this setup for buyers comparing pump action shotguns with adjustable furniture and modern mounting provisions. The Mossberg 590R brings those design choices together in one 12 gauge platform.