Mossberg 590A1 Retrograde 9 Shot 12ga Pump-Action Shotgun Walnut - 51665

Mossberg 590A1 Retrograde 9-Shot 12ga Pump-Action Shotgun with Walnut Stock - Model 51665

Mossberg
SKU:
120913666
|
UPC:
015813516655
|
MPN:
51665
$871.43
$1,169.00
(You save $297.57 )
Current Stock:
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:
Brown
Stock Description:
Fixed
Metal Finish:
Black Parkerized
Sights:
Ghost Ring
Weight Range:
7 lbs to 7.99 lbs
Barrel Description:
Heavy-Walled Heat Shield
Chokes Included:
Cylinder Bore
Product Overview

The Mossberg 590A1 Retrograde 12-gauge pump-action shotgun brings proven mil-spec reliability home in a package that honors classic fighting shotgun aesthetics. Built on the same rugged platform trusted by military and law enforcement, this 9-shot 12ga combines the durable, battle-tested 590A1 design with period-correct walnut furniture—a deliberate departure from polymer tacticool and a nod to shotguns that defined generations of hunters and home defenders. If you want a reliable, no-nonsense pump shotgun with character and proven performance, the Retrograde delivers both.

The 20-inch barrel keeps this shotgun maneuverable in tight spaces while maintaining the velocity needed for hunting and defensive work. At 41 inches overall and 7.25 pounds, it points naturally and handles smoothly whether you're moving through brush or responding in your home. The plain muzzle with cylinder-bore barrel gives you flexibility to run buckshot, slugs, or birdshot depending on your mission. The Parkerized finish on the metal parts—the same protective coating used on military arms—resists corrosion and wear, so your shotgun ages gracefully rather than showing every ding.

What sets the Retrograde apart is the walnut stock and corncob-style forend. These aren't cosmetic indulgences; they feel warm in your hands, age with character, and provide reliable purchase in all weather. The lengthened magazine tube holds nine rounds total (eight in the tube plus one in the chamber), giving you genuine firepower when it counts. This is a shotgun built to be used, not just owned—whether you're hunting upland game, running clay courses, or keeping one ready for home defense.

Key Features

  • 9-shot capacity with lengthened magazine tube (8 rounds + 1 chamber)
  • 20-inch plain barrel with cylinder bore for versatility
  • Mil-spec 590A1 platform proven in military and law enforcement service
  • Walnut wood stock and corncob-style forend for classic aesthetics and ergonomic control
  • Parkerized metal finish for corrosion resistance and durability
  • Pump-action reliability with smooth cycling

Specifications

Gauge12
Action TypePump-Action
Barrel Length20 inches
Overall Length41 inches
Weight7.25 pounds
Magazine Capacity9 total (8 in tube + 1 chamber)
Barrel ConfigurationPlain muzzle, cylinder bore
Stock MaterialWalnut wood
Forend MaterialWalnut wood (corncob-style)
Metal FinishParkerized
Model Number51665

Frequently Asked Questions

What makes the 590A1 Retrograde different from other Mossberg 590A1 shotguns?

The Retrograde pairs the proven 590A1 mil-spec design with walnut wood furniture instead of the polymer stocks found on standard 590A1 models. The walnut stock and corncob forend give it a classic shotgun appearance while maintaining all the reliability and durability the platform is known for.

How many rounds does the 590A1 Retrograde hold?

The shotgun holds 9 rounds total: 8 in the lengthened magazine tube and 1 in the chamber, giving you solid firepower for hunting, sport shooting, or home defense.

What types of ammunition can I use in this 12-gauge shotgun?

The cylinder-bore barrel is versatile and will handle buckshot, slugs, and birdshot, making the Retrograde suitable for hunting, clay sports, and defensive applications.

Is the 590A1 Retrograde suitable for hunting?

Yes. The 20-inch barrel length, cylinder-bore versatility, and nine-shot capacity make it well-suited for upland game hunting and other hunting applications where a pump-action 12-gauge excels.

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.