Mossberg 990 SPX AfterShock 12 Gauge Semi-Auto

The Mossberg 990 SPX AfterShock is a compact, semi-automatic 12-gauge platform engineered for close-quarters handling and modern accessory compatibility. It pairs an integrated heat-shield barrel and optic-ready receiver with an AfterShock pistol grip and M-LOK forend to support modular setups. Cerakote finish provides corrosion-resistant protection in olive drab green, complemented by black furniture.

Key Specifications

• The action is Semi-Auto.
• The gauge is 12 Gauge.
• The chamber accepts 3".
• The finish is Cerakote.
• The barrel features an integrated heat shield.
• The sighting includes a fiber optic front.
• The stock and forend colors are Olive Drab Green and Black.
• The receiver is optic-ready (Shield RMSc footprint) and includes adapter plates for RMR, Docter and Leupold footprints.
• The magazine uses a tubular magazine type.
• The model designation is 990 SPX AfterShock.

This platform is built for users who prioritize compact handling and modern ergonomics: its optic-ready receiver and M-LOK-equipped forend make customization straightforward, while the AfterShock grip and integrated heat shield support manageable operation in demanding use cases. The Cerakote finish and corrosion-resistant internal components provide durable service life for routine use and maintenance.