Abstract: A lasso gun used in accurately propelling a lasso toward a target is described. The lasso gun has a barrel. Communicating along the longitudinal axis of the barrel is a piston which has a front lasso holder attached. The barrel is provided with a spring. When the piston is slid from the discharge end of the barrel towards the other end, the spring is put under tension and when released the piston is forcibly slid back towards the discharge end of the barrel. An arm is pivotally mounted on the underside of the barrel. The arm has a rear lasso holder attached to its free end. The loop of a lasso is placed around both the front and rear lasso holders, the piston pushes away from the discharge end of the barrel tensing the spring and the arm is swung back away from the discharge end of the barrel. When released or fired, the piston is propelled forward and the forward motion transferred to the lasso loop.