MOSSBERG 590 M-LOK - 12 GA - 3" - 20" - 8+1 - BLACK

MOSSBERG 590 M-LOK - 12 GA - 3" - 20" - 8+1 - BLACK

Mossberg
MPN:
50674
UPC:
015813506748
$598.69 - $678.69
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Description

The Mossberg 590 M-LOK 12 Gauge Pump-Action Shotgun delivers over a century of American engineering excellence in a rugged, tactical platform built for home defense, law enforcement use, and serious shooters who demand proven reliability when it matters most.

  • Pump-action 12 gauge chambered for 3" shells for versatile ammunition options
  • 20" barrel with 8+1 capacity for extended engagement without reloading
  • M-LOK compatible forend for easy attachment of lights, grips, and accessories
  • Durable matte black synthetic stock resists weather, impact, and hard use
  • Mossberg's legendary dual extractors ensure smooth, reliable shell ejection
  • Top-mounted tang safety for ambidextrous, instinctive operation under pressure

Who This Is For

The Mossberg 590 M-LOK is purpose-built for home defenders, tactical shooters, and law enforcement professionals who want a customizable, battle-tested pump shotgun with modern rail-mounting capability. It's equally at home as a truck gun, duty weapon, or range workhorse for anyone who refuses to compromise on reliability or adaptability.

Mossberg 590 M-LOK 12 Gauge Pump Shotgun – Left Side Profile Mossberg 590 M-LOK Shotgun – Receiver and M-LOK Forend Detail

Specifications

BrandMossberg
Model590 M-LOK
ActionPump Action
Gauge12 Gauge
Chamber3"
Barrel Length20"
Capacity8+1
StockSynthetic, Black
ForendM-LOK Compatible
FinishMatte Black
SafetyTop-Mounted Tang Safety
Country of OriginUSA

Frequently Asked Questions

What types of ammunition can the Mossberg 590 M-LOK fire?

The Mossberg 590 M-LOK is chambered for 3" 12 gauge shells, meaning it can safely fire both 2¾" and 3" shotgun ammunition. This includes buckshot, birdshot, rifled slugs, and reduced-recoil defensive loads — giving you maximum flexibility for home defense, training, or range use. Always verify that your specific load meets SAAMI specifications before use.

What accessories can I mount to the M-LOK forend?

The M-LOK forend is compatible with a wide ecosystem of aftermarket accessories, including weapon lights, vertical grips, hand stops, and sling mounts from manufacturers such as SureFire, Streamlight, Magpul, and Arisaka. M-LOK slots allow low-profile, direct attachment without bulky Picatinny rail adapters, keeping the shotgun balanced and maneuverable.

How does the Mossberg 590 compare to the Mossberg 500 for defensive use?

The Mossberg 590 is the heavy-duty evolution of the 500 platform, featuring a stronger magazine tube, metal trigger guard, and metal safety button — all improvements designed for high-volume and tactical use. The 590's 8+1 capacity on this 20" model also gives it a meaningful edge over standard 500 configurations for defensive applications where additional rounds on tap can be critical.

Additional Information
Caliber:
12 GA
Color:
Black
Barrel Length:
20"
Chamber:
3"
Sights:
Ghost Ring
Capacity:
8+1
Stock:
Fixed
Action:
Pump
Type of Barrel:
Cylinder