MOSSBERG 990 AFTERSHOCK 12 GAUGE SEMI-AUTO SHOTGUN Small Size, Big Tactical Performance. Ultra-compact and easy to manuever, it delivers 5+1 semi-auto convenience paired with a host of functional tactical features. Inside, the 990's durable gas system and a host of corrosion-resistant internal parts/finishing (nickel boron-coated gas piston, magazine tube, hammer and sear), plus an enlarged/beveled loading port, elongated elevator, and anodized follower combine for smooth operation. Outside, there's the ergonomically-designed AfterShock grip with rubberized palm pad, a streamlined forend with Mossberg signature texturing, and an emb Mfg: Mossberg