MOSSBERG 590A1 M-LOK - 12 GA - 3" - 18.5" - 6+1 - BLACK
$640.69 - $731.69
MOSSBERG 590A1 M-LOK/+4 STOCK - 12 GA - 3" - 20" - 8+1 - BLACK
Mossberg
$716.69 - $817.69
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Mossberg
MOSSBERG 590A1 M-LOK/+4 STOCK - 12 GA - 3" - 20" - 8+1 - BLACK
The Mossberg 590A1 M-LOK +4 Stock is a battle-proven, military-grade pump-action shotgun built to deliver unmatched reliability and tactical versatility in a durable, no-nonsense platform chambered in 12 gauge.
- Pump-action operation with a 3-inch chamber for versatile ammunition compatibility
- 20-inch barrel delivers a commanding balance of reach and maneuverability
- Impressive 8+1 round capacity keeps you in the fight longer
- M-LOK forend allows easy attachment of lights, grips, and tactical accessories
- +4 magazine extension increases capacity over the standard configuration
- Rugged all-black synthetic stock withstands harsh conditions and heavy use
Who This Is For
The Mossberg 590A1 M-LOK is purpose-built for serious shooters, home defenders, and tactical professionals who demand a reliable, customizable shotgun that can handle anything from defensive situations to range training. It's equally well-suited for law enforcement personnel, preppers, and shotgun enthusiasts who want a proven platform with modern accessory compatibility and a high-capacity edge.
Specifications
| Brand | Mossberg |
|---|---|
| Model | 590A1 M-LOK / +4 Stock |
| Action | Pump Action |
| Gauge | 12 Gauge |
| Chamber | 3 Inch |
| Barrel Length | 20 Inches |
| Capacity | 8+1 Rounds |
| Stock | Synthetic, Black |
| Forend | M-LOK Compatible |
| Magazine | +4 Extension Included |
| Finish | Matte Black |
| Country of Origin | United States |
Frequently Asked Questions
What makes the Mossberg 590A1 different from the standard Mossberg 590?
The 590A1 is Mossberg's mil-spec variant, featuring a heavier-walled barrel, metal trigger guard, and metal safety button — all upgrades over the standard 590. This model also adds an M-LOK compatible forend for tactical accessory mounting and includes a +4 magazine tube extension, bringing total capacity to 8+1 rounds of 12 gauge ammunition.
What types of ammunition can the Mossberg 590A1 M-LOK fire?
The 590A1 is chambered for 3-inch 12 gauge shells and is compatible with a wide range of loads including 2¾-inch and 3-inch buckshot, slugs, and birdshot. This versatility makes it effective for home defense, tactical use, and range training. Always verify your specific ammunition is safe and appropriate for your intended use.
Can I add a light, sling, or other accessories to this shotgun?
Yes — the M-LOK forend on this 590A1 is specifically designed for accessory attachment. You can mount a wide variety of M-LOK-compatible accessories including weapon lights, angled grips, and more. The receiver also accepts most standard Mossberg-compatible mounts for optics and sling swivels, making this an excellent platform for building a fully customized tactical shotgun.
- Caliber:
- 12 GA
- Color:
- Black
- Barrel Length:
- 20"
- Chamber:
- 3"
- Sights:
- Ghost Ring
- Capacity:
- 8+1
- Stock:
- Fixed
- Action:
- Pump
- Type of Barrel:
- Heavy
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