Mossberg 590A1 - 9 Shot 12ga Pump-Action Shotgun Black - 51660

Mossberg 590A1 9-Shot 12ga Pump-Action Shotgun - Black (Model 51660)

Mossberg
SKU:
120913331
|
UPC:
015813516600
|
MPN:
51660
$669.32
$861.00
(You save $191.68 )
Current Stock:
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Product Specifications
Capacity-Rounds:
8
Caliber-Gauge:
12 Gauge
Hand:
Right Hand
Barrel Length:
20"
Barrel Length Range:
20" to 21.99"
OAL:
41"
Chamber:
3"
Weight:
7 lbs
Metal Finish Group:
Blued/Black
Action:
Pump
Stock Finish Group:
Black
Stock Description:
Fixed
Metal Finish:
Black Parkerized
Sights:
Bead Front
Weight Range:
7 lbs to 7.99 lbs
Barrel Description:
Heavy-Walled
Chokes Included:
Fixed Cylinder Bore
Recoil Pad Type:
Non-Slip Rubber
Product Overview

The Mossberg 590A1 is a 12-gauge pump-action shotgun built for serious duty work, home defense, and tactical applications where reliability under pressure matters most. This is a true defensive platform—the kind of shotgun trusted by law enforcement and military for decades—now available in the practical 9-shot configuration with a 20-inch barrel and fixed 14.25-inch length of pull. The 590A1 carries the legacy of one of the most battle-tested shotgun designs in the world, engineered for users who demand a no-nonsense gun that cycles anything and keeps running when it counts.

What sets the 590A1 apart is its reinforced receiver and trigger group, along with a cross-bolt safety and simple controls you can operate in any condition. The 3-inch chamber gives you flexibility with standard and magnum loads, while the cylinder bore choke keeps your shot pattern consistent for close-quarters use. A basic bead sight keeps your sight picture clear and uncomplicated. At 7.25 pounds and 41 inches overall, it's hefty enough to absorb recoil without being unwieldy in tight spaces—the weight you want when you're running the gun hard.

The parkerized barrel finish and synthetic black stock are built to work, not to impress. They resist corrosion, shrug off the elements, and won't need fussing over between uses. The synthetic furniture is durable and low-maintenance, perfect for hunters, sport shooters, and anyone who values a gun that goes to work and gets the job done. This is a shotgun that earns its place in a truck bed, a bedside safe, or a patrol setup.

Key Features

  • 9-round capacity for extended engagement or backup shells on board
  • 20-inch barrel optimized for handling and maneuverability in close quarters
  • 3-inch chamber accepts both standard and magnum 12-gauge ammunition
  • Cylinder bore choke for versatile, predictable shot patterns
  • Parkerized barrel and synthetic black stock for weather resistance and durability
  • Fixed 14.25-inch length of pull fits standard adult framing
  • Bead sight for quick target acquisition
  • Pump action—fast follow-up shots and simple operation

Specifications

Gauge12
Capacity9 rounds
Chamber3 inch
Barrel Length20 inches
ChokeCylinder bore
SightsBead
Barrel FinishParkerized
Stock FinishSynthetic black
Length of Pull14.25 inches (fixed)
Overall Length41 inches
Weight7.25 pounds
Model Number51660

Frequently Asked Questions

What ammunition does the Mossberg 590A1 accept?

The 590A1 chambers 3-inch 12-gauge ammunition, so you can load both standard 2.75-inch and magnum 3-inch shells. The cylinder bore choke works with any 12-gauge load you choose to run.

Is this shotgun suitable for home defense?

Yes. The 590A1 is purpose-built for defensive work with a short 20-inch barrel for indoor handling, a 9-round magazine for capacity, and proven reliability in high-stress situations. The fixed 14.25-inch length of pull is standard for most adult shooters in a ready position.

What's the difference between the 590A1 and a standard Mossberg 590?

The 590A1 features a reinforced receiver and enhanced trigger group for increased durability and performance in demanding applications. It's the upgraded platform trusted in military and law enforcement use.

Can I add a tactical light or other accessories to the barrel?

We don't have detailed accessory rail or mounting information in our current specs. Contact our team for guidance on aftermarket upgrades and compatibility with this model.

Additional Information

Firearm Shipments:

To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.

We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.

We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.

Email: [email protected]

  • Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
  • The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
  • The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
  • Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
  • Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
  • Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.