An elongated body is provided for gripping in the hooked fingers of the user's bow string pulling hand and including a front side for opposing the phalanges of the forefingers of the user's hand between the first and second joints thereof and a first end for opposing the thumb of the user. A pair of forwardly outwardly divergent guides are carried by the front side and are slightly spaced apart longitudinally of the body. The divergent guides are spaced from and closer to the first end than the opposite end of the body and releasable bow string engaging anchor structure is carried by the body closely inwardly of the spacing between the guides and shiftably supported from the body for movement between bow string anchoring and bow string release positions. Release structure is carried by the body and operative from adjacent the first body end by the user's thumb for releasing the bow string engaging anchor structure.
