Tiger Rock Metal Heavy Duty Dual QD Sling Adapter. This sling adaptor is ideal for use with two differing weapon sling thicknesses or when special situations or operational needs require slings to be adaptable to a variety of thicknesses and weights of rifles shotguns and handguns. Simply secure your rifle to an improvised standstill by using a rifle sling swivel and then hook your rifle sling into the universal swivel stud. Precision and rugged this adapter promises to be problem solving for your rifle sling. Package Contents: Tiger Rock Metal Heavy Duty Dual Quick-Detach Sling Adapter Tiger Rock HK2: Metal Heavy Duty Dual QD Sling Adapter