Keepshooting.com is proud to add another spare part to our ever-growing line of original Heckler & Koch G3 parts and accessories. The G3 rear sight screw washer is now available as a 5-pack for the low price of $4.95.

Like the G3 grip screw washer, the rear sight screw washer is a locking washer. It was manufactured by HK for use specifically with the G3 clamping screw – a screw designed to mount the rotary rear sight assembly to the rear of the receiver. However, unlike the grip screw washer, the rear sight screw washer has teeth built into the surface of the washer rather than teeth that radiate inward. These teeth sink into a bearing surface, in this case the underside of the screw head, and serve to prevent any loosening of the clamping screw that may result from rotations or vibrations. The G3 rear sight screw washer can be found sandwiched between the clamping screw and the oval washer in the G3 rotary rear sight assembly.

Washers are generally recommended for use in conjunction with fasteners, especially screws. Now you can guarantee that your G3 rotary rear sight stays locked down tight with five G3 rear sight screw washers.