Find it here - https://doublemdefense.com/product/magpul-m-lok-qd-sling-mount/

Factory New.

UPC: 873750002842
SKU: MAG606

The M-LOK QD Sling Mount provides a forward attachment point for the Magpul MS4 Sling and other push-button QD slings. Machined from Mil-Spec anodized aluminum, the low-profile M-LOK QD Sling Mount features beveled edges to reduce snagging and has an anti-rotation design that prevents swivels from spinning. All hardware necessary for attachment directly to M-LOK Slots is included and no modifications to the M-LOK hand guard or forend is required. Made in U.S.A.