Mossberg 590RM – 12 Gauge, 18.5", 10+1 Mag-Fed Pump with Magpul MBUS 3 (50213)

The Mossberg 590RM is a magazine-fed 12 gauge pump-action shotgun with an 18.5-inch barrel and integrated heat shield, an Accu-Choke system with a Cylinder Bore tube installed, a 10-round detachable double-stack magazine (10+1), Magpul MBUS 3 adjustable folding sights and a 5-position adjustable AR-style stock. Mossberg SKU 50213, UPC 015813502139.

This listing is for the 590RM with Accu-Choke and MBUS 3 sights (50213) only.

Double-Stack Magazines for a Pump Gun

The 590RM uses the first production double-stack magazines made for pump-action shotguns, giving more efficient capacity versus length than competing designs. An enlarged, beveled loading port with exposed follower speeds loading and clearing.

Rotary Safety and AR-Style Controls

• Ambidextrous AR-style rotary safety selector
• Flat-profile trigger with a smooth, crisp break
• 5-position adjustable stock with interchangeable recoil pad, 2 QD ports and MOE pistol grip; LOP 12"–15.25"
• Compact, ergonomic forend and forward-mounted M-LOK bracket
• Top Picatinny rail for AR-style optics plus Magpul MBUS 3 sights

Choke Flexibility

Unlike the fixed stand-off model, this configuration uses Mossberg's Accu-Choke system, shipped with a Cylinder Bore tube for close-range defensive patterns.

This firearm ships to a licensed FFL dealer of your choice for transfer. The buyer must be legally eligible to purchase and possess it under federal, state and local law.

Specifications

• Manufacturer: Mossberg
• Model: 590RM
• SKU: 50213
• UPC: 015813502139
• Gauge: 12 GA
• Chamber: 2.75"
• Action: Pump
• Capacity: 10+1 (detachable magazine)
• Barrel: 18.5", integrated heat shield, Parkerized
• Choke: Accu-Choke, Cylinder Bore installed
• Sights: Magpul MBUS 3 adjustable; Picatinny rail
• Stock: 5-position adjustable, interchangeable pad, MOE pistol grip, compact forend (black)
• Length of Pull: 12"–15.25" adjustable
• Overall Length: 36.9"
• Weight: 8 lbs