Another awesome licensed product from Cyber gun. Our Sig Sauer SP2022 C02 Air Gun utilizes the Advanced BAXS shooting system. This is different from our other airsoft C02 pistols as this C02 gun uses .177 cal metal bbs for ammunition. Features: Semi Auto Air gun Advanced BAXS Shooting System Tactical Rail Uses Steel BBs .177 Cal. 4.5 mm Specifications: Velocity 328 FPS Power Range 66 Yds Mag Capacity 23 BBs Weight 1.32 lbs Length 7.32 inches Color: Black/Silver Accuracy: Within 1.57 in from 7.65 Yards Shooting System: BAXS