590RM 12 GAUGE PUMP SHOTGUN – 590RM 12 GAUGE 18.5” BBL (1)10RD MAG BLACK W/PICATINNY RAIL

Specifications

  • Magazine Included: 1 x 10-Round
  • Finish: Black
  • Front Sight: None
  • Barrel Length: 18.5''
  • Capacity: 10-Round
  • Model: 590
  • Action Type: Pump Action
  • Make/Model: Mossberg, 590

590RM 12 GAUGE PUMP ACTION SHOTGUN

These 590RM shotguns are the latest additions to Mossberg’s magazine-fed tactical lineup. They utilize the first production double-stack magazines made for pump-actions—providing more efficient capacity vs. length than competitive designs. Plus, they combine time-tested Mossberg durability with ground-breaking new features like a rotary safety selector; a compact, ergonomically-designed forend, and an integrated barrel/single piece heat shield combination.

FEATURES:

  • 12 Gauge, 2.75" Chamber, 10+1 Capacity
  • Ambidextrous AR-Style Rotary Safety Selector
  • Stock Base/Adapter is compatible with other Grip designs; Accepts Mil-Spec stocks; Offers 5 Positions of Adjustment; 2-Sided QD mounting ports
  • 18.5" Barrel with Integrated Heat Shield; Available in Standard and Standoff versions
  • Flat Profile Trigger w/Smooth, Crisp Break
  • Adjustable Stock with MOE+ Pistol Grip, Interchangeable Recoil Pad, QD ports
  • Top Picatinny Rail optimized for AR-style optics, Provides superior sight alignment
  • Standard Pump-Action features: Dual Extractors, Positive Steel-to-Steel Lockup, and Twin Action Bars

590RM Magazines:

  • Stabilizing ribs on the magazine engage the receiver for secure lockup when mounted
  • Lever-style magazine release and mounting guide
  • Accessory magazines available in 5, 10, 15, and 20-round capacities

SPECIFICATIONS:

  • Gauge: 12 Gauge
  • Chamber: 2.75”
  • Capacity: 10 Round
  • Barrel Length: 18.5” W/Integrated Heat Shield
  • Barrel Finish: Matte
  • Sight: Picatinny Rail with MBUS Sights or Picatinny Rail Only
  • Chokes: Accu-Choke Cyl. Bore or Breacher
  • Stock/Forend: 5-Position Adjustable Stock W/Interchangeable Pad, MOE Pistol Grip, Compact Forend
Description

Original price was: $896.99.Current price is: $779.99.

590RM 12 GAUGE PUMP ACTION SHOTGUN

These 590RM shotguns are the latest additions to Mossberg’s magazine-fed tactical lineup. They utilize the first production double-stack magazines made for pump-actions—providing more efficient capacity vs. length than competitive designs. Plus, they combine time-tested Mossberg durability with ground-breaking new features like a rotary safety selector; a compact, ergonomically-designed forend, and an integrated barrel/single piece heat shield combination.

FEATURES:

  • 12 Gauge, 2.75" Chamber, 10+1 Capacity
  • Ambidextrous AR-Style Rotary Safety Selector
  • Stock Base/Adapter is compatible with other Grip designs; Accepts Mil-Spec stocks; Offers 5 Positions of Adjustment; 2-Sided QD mounting ports
  • 18.5" Barrel with Integrated Heat Shield; Available in Standard and Standoff versions
  • Flat Profile Trigger w/Smooth, Crisp Break
  • Adjustable Stock with MOE+ Pistol Grip, Interchangeable Recoil Pad, QD ports
  • Top Picatinny Rail optimized for AR-style optics, Provides superior sight alignment
  • Standard Pump-Action features: Dual Extractors, Positive Steel-to-Steel Lockup, and Twin Action Bars

590RM Magazines:

  • Stabilizing ribs on the magazine engage the receiver for secure lockup when mounted
  • Lever-style magazine release and mounting guide
  • Accessory magazines available in 5, 10, 15, and 20-round capacities

SPECIFICATIONS:

  • Gauge: 12 Gauge
  • Chamber: 2.75”
  • Capacity: 10 Round
  • Barrel Length: 18.5” W/Integrated Heat Shield
  • Barrel Finish: Matte
  • Sight: Picatinny Rail with MBUS Sights or Picatinny Rail Only
  • Chokes: Accu-Choke Cyl. Bore or Breacher
  • Stock/Forend: 5-Position Adjustable Stock W/Interchangeable Pad, MOE Pistol Grip, Compact Forend

Out of stock

SKU 430112372 Category

Description

590RM 12 GAUGE PUMP ACTION SHOTGUN

These 590RM shotguns are the latest additions to Mossberg’s magazine-fed tactical lineup. They utilize the first production double-stack magazines made for pump-actions—providing more efficient capacity vs. length than competitive designs. Plus, they combine time-tested Mossberg durability with ground-breaking new features like a rotary safety selector; a compact, ergonomically-designed forend, and an integrated barrel/single piece heat shield combination.

FEATURES:

  • 12 Gauge, 2.75" Chamber, 10+1 Capacity
  • Ambidextrous AR-Style Rotary Safety Selector
  • Stock Base/Adapter is compatible with other Grip designs; Accepts Mil-Spec stocks; Offers 5 Positions of Adjustment; 2-Sided QD mounting ports
  • 18.5" Barrel with Integrated Heat Shield; Available in Standard and Standoff versions
  • Flat Profile Trigger w/Smooth, Crisp Break
  • Adjustable Stock with MOE+ Pistol Grip, Interchangeable Recoil Pad, QD ports
  • Top Picatinny Rail optimized for AR-style optics, Provides superior sight alignment
  • Standard Pump-Action features: Dual Extractors, Positive Steel-to-Steel Lockup, and Twin Action Bars

590RM Magazines:

  • Stabilizing ribs on the magazine engage the receiver for secure lockup when mounted
  • Lever-style magazine release and mounting guide
  • Accessory magazines available in 5, 10, 15, and 20-round capacities

SPECIFICATIONS:

  • Gauge: 12 Gauge
  • Chamber: 2.75”
  • Capacity: 10 Round
  • Barrel Length: 18.5” W/Integrated Heat Shield
  • Barrel Finish: Matte
  • Sight: Picatinny Rail with MBUS Sights or Picatinny Rail Only
  • Chokes: Accu-Choke Cyl. Bore or Breacher
  • Stock/Forend: 5-Position Adjustable Stock W/Interchangeable Pad, MOE Pistol Grip, Compact Forend

Additional information

Weight 10.4 lbs
Magazine Included

1 x 10-Round

Finish

Black

Front Sight

None

Barrel Length

18.5''

Capacity

10-Round

Model

590

Action Type

Pump Action

Make/Model

Mossberg, 590

Rear Sight

None

Muzzle

NA

Stock Material

Synthetic

Length

None

Weight

NA

Make

Mossberg

Magazine Type

Tubular

Gauge

AEE_12 Gauge

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.