Mossberg 590RM 12 Gauge Pump Shotgun, 18.5 Inch Barrel

Description

The 590RM is Mossberg’s answer to a specific problem: the standard tube-fed shotgun forces the shooter to top off one shell at a time under stress, which is slow and demands fine motor skills most people lose when it matters. By switching to a detachable box magazine, the 590RM lets you reload with the same gross-motor motion you use on any magazine-fed platform—drop the empty, seat a fresh one, run the action. That change alone makes this shotgun a practical choice for anyone running structured training, defensive drills, or competition formats that reward fast reloads.

The 18.5-inch barrel keeps the overall package short enough to handle in confined spaces without sacrificing much velocity, and the integrated heat shield manages barrel temperature during sustained strings of fire so your support hand stays where it belongs. Controls are set up for ambidextrous use, with a rotary safety selector that can be reached without shifting your grip, and a flat-profile trigger that gives you a consistent reference point for your finger on every press. The five-position adjustable stock means the length of pull can be matched to the shooter or to the gear they’re wearing, which matters when the shotgun needs to fit different users or different kit configurations.

A top-mounted Picatinny rail comes integrated into the receiver, so mounting a red dot or other optic requires no additional base hardware. The 590RM ships with one 10-round magazine and carries a 10+1 capacity, giving you meaningful capacity while keeping the magazine profile manageable. Finished in matte black, the platform is built around Mossberg’s established 590 action, which has a long service record in demanding environments.

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