Reptilia 100-123 M-LOK Black QD Sling Mount: Secure and Stealthy Attachment SolutionReptilia M-LOK Black Socket QD Sling Mount 100-123 with its low-profile, anti-snag design. Attaching via the M-LOK interface, Reptilia 100-123 is machined from a single piece of billet 7075-T6 aluminum and finished with a MIL-STD Type III, Class 2 hard anodize coating for durability. Reptilia M-LOK Black Socket QD Sling Mount 100-123