specification CALIBER 4.5mm(.177)/5.5mm(.22) VELOCITY Cal 4.5 0.55g pellets 1000fps,approx. 70 shots at full power Cal 5.5 1.0g pellets 1000fps,approx 50 shots at full power AIR CAPABILITY 250cc SAFETY Adjustable manual safety,ON 1~6 Lbf/OFF 1~6 Lbf REGULATED PARTS Yes, regulating velocity 500~1000fps CONSISTENT VALVE Yes WEIGHT 3.70kg TRIGGER Two-stage adjustable,1-6Lbf L*W*H 1140*48*60(mm) MAGAZINE 4.5(.177) holds 13 pellets 5.5(.22) holds 11 pellets SUPPRESSER Integrated suppresser FILL PRESSURE Max.20MPa