Mossberg 590A1 Pro 12 Gauge | 18.5in | MFG# 50790

The Mossberg 590A1 Pro is a 12-gauge pump-action shotgun configured with a heavy-walled 18.5-inch barrel finished in Tungsten Gray Cerakote and a black synthetic field stock. It pairs a rugged, military-grade design with an optic-ready receiver and metal ghost-ring front fiber-optic sights for quick sight acquisition. The model is built for demanding duty use and tactical training while offering an adjustable length of pull to fit a range of shooters.

Product Specifications

• The manufacturer is Mossberg.
• The model is listed as 590A1.
• The manufacturer part number is 50790.
• The UPC is 015813507905.
• The gauge is 12 Gauge.
• The action type is Pump-Action.
• The chamber is rated for 3-inch shells.
• The barrel measures 18.5 inches and is heavy-walled.
• The barrel finish is Cerakote Tungsten Gray.
• The receiver is described as drilled & tapped (optic-ready) in some sources and as not drilled in others; see notes.
• The stock material is black synthetic with an adjustable length of pull.
• The sights are a metal ghost-ring rear with front fiber-optic and the receiver is optic-ready for micro red-dot footprints.
• The reported weight is 6.75 pounds.
• The overall length measures 37.75 inches.
• The listed capacity in specification fields is 6+1.

Combining proven Mil-Spec lineage with practical features like an adjustable LOP and an optic-ready receiver, the 590A1 Pro is aimed at shooters who need a dependable, service-oriented pump shotgun. Its heavy-walled barrel and Cerakote finish increase resistance to wear in routine training and operational environments while the synthetic stock and corncob-style forend provide a secure, low-maintenance setup.

Owners commonly praise the shotgun for its reliability and robust construction, and many note the utility of the optic-ready receiver and adjustable length of pull as practical, user-focused details.

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