The Mossberg 990 SPX AfterShock is an ultra-compact 12 Gauge semi-automatic tactical shotgun designed for maneuverability in security and close-quarters applications. Its 14.75-inch Cerakote OD Green barrel and receiver provide a durable, corrosion-resistant finish, while the gas system and corrosion-resistant internal components support dependable operation. The AfterShock grip helps provide a secure hold and reduce felt recoil. A redesigned forend incorporates an integrated heat shield, M-LOK accessory slots, and QD sling ports, while the extended magazine tube adds further accessory-mounting flexibility. The enlarged loading port, knurled charging handle, oversized controls, and beveled loading area are designed for efficient handling. A winged front fiber optic sight is paired with an optic-ready receiver that accepts the Shield RMSc footprint and includes adapter plates for several additional optic footprints.

Key features

• 5+1 capacity supports practical defensive and security use.
• 14.75-inch barrel and 27.125-inch overall length provide compact handling.
• Semi-automatic gas-operated action supports fast follow-up shots.
• Cerakote OD Green barrel and receiver offer durable corrosion resistance.
• AfterShock grip helps improve control and reduce felt recoil.
• Optic-ready receiver supports Shield RMSc footprint optics and included adapter plates support additional footprints.

The Mossberg 990 SPX AfterShock combines compact dimensions, tactical controls, and flexible optic and accessory mounting in a maneuverable semi-automatic shotgun.