The 990 SPX delivers semi-auto convenience paired with a host of highly functional tactical components. Inside, the 990's durable gas system, corrosion-resistant internal parts and finish, plus an enlarged, beveled loading port, an elongated elevator, and an anodized follower combine for smooth operation. Outside, the adjustable SGA stock allows incremental length-of-pull flexibility, and a tactical forend with an integrated heat shield and multiple mounting slots and ports provides accessory flexibility. The optic-ready cut receiver comes equipped with a rear ghost ring sight plate paired with the winged front fiber optic sight. The cut allows direct mounting of RMSc footprint micro dots-with additional adapter plates provided to accommodate other popular optic formats.