The present invention provides stable support for the extended arm of the operator of a projectile weapon or camera. The invention contains two support members oriented opposed from one another and connected by telescoping support extension members. One support member accepts the user's arm, while the other accepts the user's thigh. Since the invention supports the user's arm rather than the object being used, the invention may accommodate--without alteration--any device the user wishes to operate. Between each support member and the extension member is a connector which provides for 360 degree rotation of each support member. This innovation allows the user to extend or contract the user's arm while still supported by the invention, thereby alleviating the fatigue which may develop from keeping the arm fixed in an extended position. The invention requires no straps or other means to affix it to the operator's body and instead is held in place by tension between the user's arm and the user's thigh. This design helps minimize injury from a fall by enabling the user to quickly discard the invention. The noiseless operation of the invention ensures it will not frighten away game or other wildlife.