Mossberg 990 AfterShock 12 Gauge 18.5″ Barrel

The Mossberg 990 AfterShock is a compact, semi-automatic 12 Gauge shotgun built for maneuverability and modular accessory use. Its 18.5" barrel and matte blued metal finish are paired with a black synthetic AfterShock grip and a strapped forend with integrated M-LOK mounting slots. The platform includes a fiber-optic front sight and an enlarged, beveled loading port for smoother operation.

Key Specifications

• The gauge is 12 Gauge for standard defensive and sporting load compatibility.
• The action is Semi-Auto for reduced recoil impulse and follow-up handling.
• The barrel measures 18.5 inches to balance compact handling and ballistic performance.
• The metal finish is Matte Blued for a low-reflective profile.
• The stock and grip are Black Synthetic with the AfterShock ergonomic pad for improved control.
• Sights include a Fiber-Optic Front for quick target acquisition in variable light.
• The forend features M-LOK mounting slots on the magazine tube extension for accessory attachment.
• The firearm uses a Tubular magazine and includes 1 x 5-Round magazine component as shipped.
• The model series is AfterShock, reflecting the grip/ergonomic package.
• The package includes an Embossed Strapped Forend for hand placement and heat management.

Purpose-built for users who prioritize compact handling and straightforward functionality, the 990 AfterShock pairs a rugged semi-auto gas system and corrosion-resistant internal finishes with practical tactical features like M-LOK compatibility and a fiber-optic sight. Its synthetic furniture and compact profile make it suitable for close-quarters utility and situations that demand ease of movement and versatile accessory options.