Mossberg 590RM 12 Gauge Pump-Action Shotgun, 18.5-Inch Barrel

Description

The Mossberg 590RM is built for shooters who want the manual simplicity and mechanical reliability of a pump-action combined with the faster reloading of a detachable box magazine. Where a traditional tube-fed shotgun requires individual shell loading under pressure, the 590RM accepts double-stack magazines that drop free and swap like a rifle, which matters considerably in training environments or any situation where speed of reloading is a practical concern.

The action itself is the same proven Mossberg 590 platform — dual extractors, a steel-to-steel lockup, and a rotary safety positioned at the top rear of the receiver where the thumb reaches it without shifting grip. The heat shield integrated over the barrel keeps the forend comfortable during sustained fire and doubles as a mounting surface without adding a separate rail section.

The top Picatinny rail provides a consistent mounting platform for optics, and the Magpul MBUS 3 folding sights that ship with the gun serve as a practical backup when glass is mounted or as standalone sights on a stripped-down setup. MBUS 3 sights are aperture-style with tool-free windage and elevation adjustment, and they fold flat when not in use so they clear most optic footprints without being removed. The five-position adjustable stock lets the length of pull be dialed in rather than fitted to a single shooter, which is useful on a range gun shared among multiple users or on a duty gun where the shooter may be wearing body armor.

This is a purpose-built magazine-fed pump that rewards shooters who value the control of a manual action and want the logistical advantages of a box magazine over a tube.

Shipping and availability: This item must ship to a licensed FFL dealer for transfer.