The Mossberg 590A1 12 Gauge pump-action shotgun is built around the proven 500-series platform and meets the demanding Mil-Spec 3443 requirements associated with military-grade service shotguns. This model features a heavy-walled 20-inch barrel with a cylinder bore and Parkerized metal finish, along with a durable black synthetic stock. Its 8+1 capacity, tang-mounted manual safety, and bead front sight provide a practical configuration for defensive and general-purpose use. The 3-inch chamber accommodates both standard and magnum 12 Gauge shotshells, while the fixed 14.25-inch length of pull supports a consistent shooting position.

Key features

• Heavy-walled 20-inch barrel provides durable service under demanding use
• 8+1 capacity offers substantial onboard ammunition capacity
• Parkerized metal finish helps protect the action from wear and corrosion
• Bead front sight supports fast target acquisition
• Fixed synthetic stock provides a durable, weather-resistant configuration
• 3-inch chamber accepts a broad range of 12 Gauge shotshell loads

The Mossberg 590A1 delivers dependable pump-action performance for defensive and general-purpose shotgun use.