Mossberg 990 AfterShock 12 Gauge Semi-Auto Shotgun

Description

The Mossberg 990 Aftershock is built for shooters who need a 12-gauge that works in confined spaces without giving up the follow-up shot speed that a pump requires you to earn. That means home defense hallways, vehicle storage, or any role where a longer gun becomes a liability rather than an asset.

The semi-automatic action is driven by a gas-operated system, and that matters practically: gas operation bleeds propellant pressure to cycle the action, which spreads the recoil impulse over a longer dwell time compared to a manually operated gun. The result is a softer, more predictable push rather than a sharp snap, which makes staying on target between shots meaningfully easier. Internal components including the gas piston are coated in nickel boron, which reduces friction and resists fouling, so the gun keeps cycling reliably with less cleaning between sessions.

The fiber optic sight gives you a bright, fast acquisition point in normal lighting conditions without requiring batteries or electronics. The ambidextrous safety means the controls work without a grip shift for either hand. A beveled loading port and elongated elevator speed up topping off the magazine under any kind of stress, and M-LOK slots on the magazine tube extension let you mount a light or other accessory without permanent modification.

The AfterShock grip includes a rubberized palm pad specifically to help manage recoil on a short-barreled, lightweight platform where there is less mass absorbing the energy of each round. Oversized controls throughout are sized for gloved hands, which tells you something about the environments Mossberg designed this gun to operate in.

Shipping and availability: This item must ship to a licensed FFL dealer for transfer.