Mossberg 590A1 Magpul Series 12ga Pump-Action Shotgun, 9 Shot, Black - Model 51773

The Mossberg 590A1 Magpul Series is a purpose-built 12-gauge pump-action shotgun designed for serious shooters who demand reliability, modularity, and real-world performance. Built on the legendary 590A1 platform—trusted by military and law enforcement—this 9-shot configuration pairs a robust parkerized finish with modern ergonomics from Magpul's SGA/MOE furniture, giving you a shotgun that handles like a modern rifle while maintaining the raw stopping power of a combat-proven combat gun.

If you're setting up a home-defense shotgun, running practical shooting courses, or want a no-nonsense platform you can actually configure to fit your hands and shooting style, the 590A1 Magpul delivers. The 20-inch barrel keeps the gun compact and maneuverable in tight spaces—the overall length is just 41 inches, critical when you're moving through doorways or vehicles. XS Ghost Ring sights give you fast, reliable target acquisition in low light or high stress; they've been combat-proven for a reason. The adjustable length of pull (12.25 to 14.25 inches) means the stock fits shooters with different frames and gear configurations, and the Magpul furniture is built to take a beating and keep cycling.

At 7.25 pounds, it's substantial enough to manage recoil without being a boat to shoulder. The 3-inch chamber handles standard and magnum rounds, giving you flexibility in ammo selection without compromising the gun's proven simplicity. This isn't a shotgun chasing trends—it's a working tool that gets the job done every time you pull the trigger.

Key Features

• Pump-action with 9-shot capacity for reliable follow-up shots
• 20-inch barrel—compact for tactical use without sacrificing control
• Magpul SGA/MOE stock and furniture for ergonomic control and modularity
• XS Ghost Ring sights for fast, low-light target acquisition
• Adjustable length of pull (12.25" to 14.25") to fit different shooters and gear
• 3-inch chamber accommodates standard and magnum ammunition
• Parkerized finish resists corrosion in tough conditions

Specifications

Frequently Asked Questions

What's included with the Mossberg 590A1 Magpul?

You get the shotgun as described with the Magpul SGA/MOE furniture, XS Ghost Ring sights, and both length-of-pull positions (12.25" and 14.25") available on the adjustable stock.

Can I use both standard and magnum shotgun rounds?

Yes. The 3-inch chamber handles standard and magnum ammunition, giving you flexibility in your ammo selection.

Is this shotgun compact enough for home defense or tight spaces?

At 41 inches overall length with a 20-inch barrel, it's significantly more maneuverable than a traditional hunting shotgun—ideal for home defense, vehicle storage, or tactical courses where compact handling matters.

Does the adjustable stock fit different body types?

Yes. The Magpul SGA/MOE stock offers two length-of-pull settings (12.25" and 14.25"), accommodating shooters with different frames and different amounts of tactical gear.