Abstract: An adjustable gun butt assembly includes two plates, one of which is attached to the gun butt and the other which is attached to a resilient shoulder pad. The two plates move relative to one another by way of an eccentric cam disposed in one of the plates. The plates are held in frictional contact to one another by a single set screw accessible through an aperture in the resilient shoulder pad. The shoulder pad may be adjusted orthogonally by way of the cam and additional vertical movement is allowed by way of an extended slot. Sand paper may be fixed to one of the plates to provide a frictional grip between the two plates when the set screw is tightened.