specification CALIBER 4.5mm(.177)/5.5mm(.22) VELOCITY Cal 4.5 0.5g pellet 700fps,notless than 30 shots per fill Cal 5.5 1.0g pellet 600fps, not less than 20 shots per fill AIR CAPABILITY 65cc RAIL 12mm dovetail CONSISTENT VALVE Yes WEIGHT 0.90kg TRIGGER adjustable,5Lbf FILL PRESSURE Max.22MPa