Sling mount positioned behind receiver provides a comfortable, ambidextrous balanced weapon carry.No tube disassembly or removal, simply remove collapsible buttstock, slide over tube position properly and secure.Use with single point carabiner slings or sling webbing up to 1.25".Ambidextrous design.Easy and fast installation. No tools required.CNC machined from aluminum with matte black finish.No gunsmithing required.Part #: OPSMFits: M16/AR15/CarbineMade of: AluminumWeight (oz.): 0.64Length (in.): 0.625"Height (in.): 2.125"Width (in.): 2.25"