The Mossberg 990 AfterShock is a compact 12 Gauge semi-automatic shotgun built around an 18.5-inch barrel and a maneuverable chassis. It pairs an ergonomic AfterShock pistol grip and a strapped synthetic forend with M-LOK mounting slots for accessories. The internal gas system and corrosion-resistant components are designed to support reliable operation in demanding conditions.
Key Specifications
- Gauge is 12 Gauge.
- Action type is Semi-Auto.
- Barrel length is 18.5 inches.
- Chamber size is 3 inches.
- Barrel finish is Matte Blued.
- Barrel material is Chrome Lined Steel.
- Stock material is black synthetic with an AfterShock pistol grip.
- Sights include a front fiber optic sight.
- Forend includes M-LOK mounting slots for accessory attachment.
- Features include an enlarged and beveled loading port and corrosion-resistant internal parts.
Purpose-built for compact handling and practical defensive use, the 990 AfterShock offers a balance of ergonomic controls, corrosion-resistant hardware, and accessory flexibility. Its compact footprint and user-focused features make it well suited to security or home-defense roles where reliable semi-automatic performance and maneuverability matter.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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