The 990 AfterShock small size, big tactical performance. Ultra-compact and easy to maneuver, it delivers 5+1 semi-auto convenience paired with a host of functional tactical features. Inside, the 990’s durable gas system and corrosion-resistant internal parts (nickel boron-coated gas piston, magazine tube, hammer and sear), an enlarged/beveled loading port, elongated elevator and anodized follower combine for smooth operation. The ergonomic AfterShock grip with rubberized palm pad, a streamlined forend with Mossberg signature texturing and an embossed strap for a solid hold; plus a magazine tube extension with M-LOK mounting slots on the sides and bottom for easy accessory. 5+1 Capacity w/2.75″ shells.