Magpul M-LOK QD Quick-Disconnect Sling Mount Provides a forward attachment point for the Magpul MS4 Sling and other push-button QD slings Machined from Mil-Spec anodized aluminum Beveled edges to reduce snagging; Anti-rotation design that prevents swivels from spinning All hardware necessary for attachment directly to M-LOK Slots is included No modifications to the m-lok hand guard or forend is Required