polishsupremacist44This is the locking ring that attaches to the end of the rail grabber screw to prevent the screw from backing out completely when unscrewing it. This locking ring can also be used on the WMX200 series of white lights. Website link- https://www.fotonikainc.com/?fotonikaRoute=products%2Fl3-ngal-wmx200-compatible-rail-grabber-screw-locking-ring.html
