Mossberg 990 AfterShock 12 Gauge Semi-Auto Shotgun

About this product

The Mossberg 990 AfterShock is a compact, tactical 12-gauge semi-automatic shotgun designed for close-quarters and security applications. It ships with a factory-installed Crimson Trace Lasersaddle for low-light aiming and an AfterShock ergonomic pistol grip with a rubberized palm pad for improved control. The platform incorporates a durable gas system and multiple corrosion-resistant internal finishes intended for dependable operation. The M-LOK compatible strapped forend provides accessory mounting flexibility without adding unnecessary bulk.

Key Specifications

• This model uses a Semi-Auto action for straightforward operation.
• The caliber/gauge is 12 Gauge.
• The barrel finish is Matte Blue.
• Equipped with a Fiber Optic front sight and a factory-installed Crimson Trace Lasersaddle.
• Features an AfterShock ergonomic pistol grip with a rubberized palm pad and a black synthetic stock.
• The forend includes a magazine tube extension with M-LOK mounting slots for accessory attachment.
• Internal parts incorporate corrosion-resistant finishes, including a nickel boron-coated gas piston, magazine tube, hammer and sear.
• An enlarged and beveled loading port and elongated elevator assist with faster reloads.
• Factory choke configuration is Cylinder Bore.
• Uses a tubular magazine and includes one magazine tube as shipped.

Balanced for maneuverability and functional use, the 990 AfterShock combines compact handling with practical tactical features such as the Crimson Trace Lasersaddle, M-LOK forend and corrosion-resistant internals. Its ergonomics and loading enhancements are aimed at reliable, repeatable operation in close-range security applications and other duty roles.

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