Abstract: In an adjustable gun sight, the improvement of a sight frame having spaced opposed tubular frame ends and an upwardly facing concave frame portion extending therebetween in longitudinal alignment, a cylindrically shaped sight pin supported by said tubular frame ends, the sight pin having a centrally located eccentrically mounted sight surface between its ends; a click device is provided for maintaining the sight pin in rotatably adjusted position with said surface being eccentrically rotatable enabling the position of the sight surface to be set in varied adjusted positions, the sight pin having a collar adjacent to one end, which collar is coactable with a shoulder on the associated tubular frame end to prohibit axial disengagement of the sight pin, the other of the opposed tubular frame ends having inside threads, an adjustable plug engaged in threaded assembly with the threads of the other tubular frame end for holding the sight pin against axial dislodgement relative to the sight frame and for enabling th