MOSSBERG 590RM 12 GA 18.5" 5 POSITION ADJ MIL SPEC

The 590RM introduces the first mass-produced double-stack detachable magazines for pump-action shotguns, delivering greater capacity without excessive length compared with competing designs. It pairs Mossberg’s proven durability with modern, user-focused innovations - including an ambidextrous rotary safety, a compact ergonomic forend, and an integrated barrel/heat-shield assembly, to create a reliable, adaptable platform for security use.

Key features :

• Ambidextrous AR-style rotary safety selector
• 10-round detachable double-stack magazine (10+1 capacity)
• 18.5" barrel with integrated heat shield and phosphate finish
• Magpul MBUS 3 adjustable sights and top Picatinny rail for AR-style optics
• Compact, ergonomically designed forend
• Enlarged, beveled loading port with exposed follower for faster reloads
• Flat-profile trigger with a smooth, crisp break
• 5-position adjustable stock with MOE pistol grip, interchangeable recoil pad, and 2 QD sling ports

Specifications :

• MPN: 50213
• Gauge: 12 Gauge
• Action type: Pump-Action
• Chamber size: 2.75"
• Intended use: Security
• Barrel length: 18.5"
• Barrel type / finish: Integrated heat shield / Phosphate
• Choke: Accu-Choke System - Cylinder Bore choke installed
• Capacity: 10+1
• Overall length: 36.9"
• Length of pull (LOP): 12"–15.25" (adjustable)
• Sights: Magpul MBUS 3 adjustable sights
• Stock: 5-position adjustable stock with interchangeable pad, MOE pistol grip, compact forend (black)
• Trigger: Flat profile
• Safety: Rotary safety selector
• Weight: 8 lbs