Abstract: An upper sling attachment adapter for M-16 rifles and M-4 carbines and others utilizing a front sight having at least one leg extending at one end from near the end of the weapon barrel to, at its other end, the front sight of the weapon and having right and left sides with respect to the weapon, the improvement comprising a sling attachment means encircling and clamping said leg and extending along at least one of the right or left sides of the said leg, said sling attachment means having upper sling mount means to which the upper end of a weapon sling is attached, said upper sling mount means being suspended by said attachment means and extending away from said leg so that the upper end of the weapon sling is held away from the sight line of the front sight.