United States Tactical 1in Sling Adapter Hook HK Black. This Sling Adapter from the experts at United States Tactical is 1" nylon webbing comes with stainless steel HK hook or stainless steel push-button QD swivel hook and integrated QR buckle connector that fits 1" quick-release buckle. So if you need to convert your gun sling to use it with other weapons the United States Tactical Sling Adapter is a terrific starting point. This sling adapter combined with one of our 1" United States Tactical slings will provide you with the functionality you need. So if you need a gun sling adapter... look no further. Specifications for United States Tactical 1.25in Sling Adapter Hook: Manufacturer: United States Tactical Sling Material: Nylon Country of Origin: USA Features of United States Tactical Sling Adapter Stainless steel HK hook or push-button QD swivel hook. Integrated QR buckle connector fits 1 - 1.25 in quick-release buckle. Package Contents: United States Tactical Sling Adapter United States Tactical UST-ADP00101QH: 1in Sling Adapter Hook HK Black