The Mossberg 990 Aftershock SPX in 12 gauge (brand part no. 83011) is an ultra-compact semi-automatic shotgun built around a 14-inch barrel with a 3-inch chamber, giving shooters a maneuverable platform loaded with tactical features. Mossberg finishes the 990 Aftershock SPX in Flat Dark Earth Cerakote and equips it with an optics-ready mount using the Shield RMSc footprint, plus three additional adapter plates for RMR, Docter, and Leupold-pattern optics. Among shotguns in the semi-auto shotguns category, this Aftershock SPX configuration favors shooters who want a compact, optic-ready platform with modern tactical controls.

Key Specifications

• Chambered in 12 gauge with a 3-inch chamber.
• Features a 14-inch barrel.
• Feeds from a magazine with a 5+1 capacity.
• Finished in Flat Dark Earth Cerakote.
• Optics-ready with a Shield RMSc footprint, plus three additional adapter plates included.
• Ships with a Cylinder Bore choke.
• Sighted with an LPA front fiber-optic sight with protective wings.
• Built with an M-LOK-equipped forend featuring an integrated heat shield and QD ports.
• Overall length is 27.125 inches.
• Ships at approximately 8.2 pounds.

Frequently Asked Questions

Is this shotgun ready for a red dot optic? Yes, it uses a Shield RMSc footprint and includes three adapter plates for RMR, Docter, and Leupold-pattern optics.

What forend features does this shotgun have? An integrated heat shield, multiple M-LOK accessory slots, and QD sling ports.

What choke does this shotgun ship with? A Cylinder Bore choke.

Buy the Mossberg 990 Aftershock SPX Shotgun

A compact, optic-ready platform with modern tactical controls is exactly what the Aftershock SPX delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.