Mossberg 590RM Pump Shotgun, by Thomas Christianson
Mossberg continues to innovate tactical shotgun design with their new 590RM Pump Shotgun. The “R” in the name refers to the ambidextrous rotary safety that gives the shotgun more AR-like ergonomics and handling features. The “M” refers to the 10-round detachable magazine that allows faster reloads. Other key features include a Magpul pistol grip with a storage compartment in the grip, a buttstock adjustable for LOP, a recoil pad, and a heat shield over the barrel. The model that I tested also features a Picatinny rail for mounting optics, adjustable Magpul MBUS3 two-piece pop-up sights, and a front M-Lok adapter …