The Umarex Patrol Rifle kit - a 7.5 Joule spring powered air gun built with a sleek thumbhole synthetic stock. Includes a 3-7x30 scope with mounts. The Specs:Energy Level<7.5 JoulesVelocity175m/s /574 FPSCaliber4.5mm (.177 pellet)Power SourceSpring-operatedSafetyPushbutton safetyLength1035mm..