Mossberg 590A1 Retrograde | 12 Gauge | 20in | 51665

The Mossberg 590A1 Retrograde is a duty-grade pump-action shotgun offered in 12 gauge with a 20-inch heavy-walled barrel and heat shield. It retains the 590A1’s duty-oriented features — twin action bars, dual extractors and an anti-jam elevator — while presenting a vintage-style field appearance. This configuration is suited for range training and duty/training use where a durable, easy-to-maintain pump shotgun is required.

Product Specifications

• The gauge is 12 Gauge.
• The action type is Pump Action.
• The barrel measures 20 inches.
• The maximum chamber size accepts 3″ shotshells.
• The barrel features a heavy-walled heat shield.
• The sights are ghost ring front and rear.
• The overall length is 41 inches.
• The listed weight is approximately 7.25 lbs.
• The ATF model designation is M590A1.
• The manufacturer model is 590A1.
• This item is part of the Retrograde series.
• The safety type is a Top Tang safety.
• Included external features list a bayonet lug and a corncob forend/heatshield.
• The country of origin is US.
• The UPC is 015813516655.

The Retrograde 590A1 blends duty-grade internal components with a traditional field appearance. Its heavy-walled barrel and simple pump operation make it straightforward to use and maintain for routine range work or agency training. The ghost-ring sights provide a clear, fast sight picture for target acquisition while the heat shield helps during sustained fire sequences.

Owners commonly praise the 590A1 family for its reliability under demanding conditions and for its durable, no-nonsense construction.

Related Videos: