Reptilia SOCKET, Sling Attachment, Black 100-123 Introducing the Socket Mount M-LOK QD attachment point" from Reptilia. Driven by the request of an end user group" for an anti-snag" low profile" streamline M-LOK attachment. The Socket mount is machined from a single piece of billet 7075-T6 aluminum and is finished with MIL-STD Type III" Class 2" hard anodize coating.