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MOSSBERG 51665 MODEL 590A1 RETROGRADE 12 GA 20" GHOSTRING WOOD
Description:
The Mossberg 590A1 Retrograde (51665) is a 12-gauge pump-action shotgun built to military-grade specifications and dressed in classic walnut furniture, giving tactical shotgun buyers a hard-working defensive platform with the aesthetic of Mossberg's original tactical pumps. This 12-gauge pump-action tactical shotgun is purpose-built for home defense, law enforcement training, and range use by shooters who want proven reliability wrapped in a timeless wood stock package.
Key Features
Part number 51665
Gauge: 12 gauge
Chamber: 3-inch, accepts 2.75-inch and 3-inch factory shells
Capacity: 8+1 with 2.75-inch shells, 7+1 with 3-inch shells
Barrel: 20-inch heavy-walled, Parkerized finish with heat shield
Stock: Checkered walnut with vented recoil pad
Forend: Matching checkered walnut
Receiver: Aluminum alloy, Parkerized, drilled and tapped
Trigger guard and safety button: Steel construction
Sights: Rear ghost ring adjustable peep, high-visibility orange front bead
Weight: 7.25 lbs.
Overall length: 40 inches
Length of pull: 14 inches
Action: Pump action
Safety: Ambidextrous top-mounted tang safety
Bayonet lug included
Special Features
The 590A1 platform meets U.S. military procurement specifications, with a heavier barrel wall, steel trigger guard, and steel safety button that exceed standard civilian shotgun construction.
Dual extractors and twin action bars work together to pull spent shells cleanly and cycle the action smoothly under hard use.
Positive steel-to-steel lockup between the bolt and barrel extension gives this shotgun a secure, tight lock on every shot.
An anti-jam elevator guides shells onto the carrier reliably, reducing feed interruptions during rapid cycling.
The ghost ring rear sight and high-visibility front bead work as a fast sighting system that delivers slug-capable accuracy at defensive distances.
The drilled and tapped receiver accepts a Picatinny rail, letting the shooter mount optics or a light without permanent modification.
The barrel heat shield protects the support hand during extended firing strings and reinforces the classic tactical look of the Retrograde series.
The checkered walnut stock and matching forend are fitted with a vented recoil pad and carry a grip texture that holds firm across varied conditions.
Practical Benefits
The 20-inch heavy barrel gives you one extra round of capacity over shorter 590 variants while keeping overall length practical for indoor and vehicle use.
Ghost ring sights let you engage targets faster than a bead-only setup and deliver the precision needed for slug work at extended range.
The ambidextrous tang safety sits where your thumb lands naturally, so you can disengage it instantly without shifting your grip.
The quick-change barrel system allows you to swap barrels for different applications without sending the shotgun to a gunsmith.
Walnut furniture gives this shotgun a natural feel that synthetic stocks do not replicate, and the checkering bites into your palm when weather changes the grip equation.
The bayonet lug opens up accessory options for those running this platform in training, competition, or service roles.
If you are a home defense shooter who wants military-proven reliability in a shotgun that looks and feels like a classic, the Mossberg 590A1 Retrograde 51665 puts that combination in your hands.
The Mossberg 590A1 Retrograde (51665) in 12 gauge is a dependable option for defensive shooters, training programs, and collectors who demand genuine military-spec construction paired with traditional walnut furniture.