Obsidian Arms QD Sling Mount M-LOK Aluminum Black. Machined from Mil-Spec anodized aluminum this M-LOK QD Sling Mount is low-profile 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 and no modifications to an M-LOK compatible slot is required. Specifications for Obsidian Arms QD Sling Mount M-LOK: Manufacturer: Obsidian Arms Color: Black Attachment Type: Quick Detach Gun Type: Universal Gun Model: Universal Length: 1.4 in Width: 0.6 in Sling Material: Aluminum Padding: No Mount Type: M-LOK Country of Origin: USA Features of Obsidian Arms QD Sling Mount M-LOK M-LOK Black hard coat anodized (MIL-A-8625 Type III Class 2) Anti-rotation fixed positioning Package Contents: Obsidian Arms QD Sling Mount M-LOK M-LOK Screws T-nuts Obsidian Arms OA-QD-M-LOK-AL-BLK: QD Sling Mount M-LOK Aluminum Black