Mossberg 990 Aftershock 12 Ga 18.5" Pistol Grip Firearm - 3" Chamber

990 Aftershock 12 Ga 18.5" Pistol Grip Firearm - 3" Chamber

The Mossberg 990 AfterShock delivers uncompromising tactical firepower in an ultra-compact footprint. Chambered in 12 gauge and equipped with a durable gas system, AfterShock grip, and M-LOK accessory-ready forend, this semi-automatic platform is engineered for close-quarters agility, rapid handling, and superior control. Built for security, defense, and quick-response applications, the 990 AfterShock blends traditional Mossberg reliability with modern ergonomic enhancements.

AfterShock Grip System
Sculpted for a firm hold and reduced felt recoil, includes rubberized palm pad for comfort

Durable Gas-Operated Action
Delivers smooth cycling and reduced maintenance

Enlarged & Beveled Loading Port
Orange anodized follower and pinch-free elevator enhance reload speed

Knurled Charging Handle & Oversized Safety/Bolt Release
Easy to operate with gloves or under stress

Streamlined Forend with Embossed Strap
Keeps lead hand clear of muzzle, Mossberg textured grip

Magazine Tube Extension
5+1 capacity with M-LOK-compatible mounting slots for lights and accessories

Fiber Optic Front Sight
Fast sight acquisition in low light

Compact Profile
Maneuverable in tight spaces and vehicle scenarios

Specifications

• Gauge: 12 Gauge
• Chamber Size: 3"
• Action Type: Semi-Auto (Gas Operated)
• Barrel Length: 18.5"
• Barrel Finish: Matte Blue
• Choke: Cylinder Bore
• Magazine Capacity: 5+1
• Overall Length: 30.875"
• Weight (Unloaded): 6.29 lbs
• Sights: Fiber Optic Front
• Stock Configuration: AfterShock Grip with Strapped Forend
• Usage: Security / Tactical
• Safety: Oversized, Ergonomic Crossbolt with Red Indicator
• M-LOK Mounting: Integrated into Magazine Extension