GG&G Heavy Duty Enhanced Quick Detach Sling Swivel Black. Built with heavy duty components the GG&G HD QD Swivels are manganese phosphate finished in matte black per mil-spec. Two models of GG&G Heavy Duty Quick Detach Sling Swivels are available: Heavy Duty Quick Detach Sling Swivel With Enhanced QD Release Button-GGG-1418: accommodates webbing up to 1-1/4". Heavy Duty Quick Detach Sling Swivel With Enhanced QD Release Button And Angular Sling Attachment Wire-GGG-1419: retention wire is angular shaped in order to place the HK style quick clips or mash hooks in the optimum position. Specifications for GG&G Quick-Detach Heavy Duty Swivels: Finish: Manganese phosphated matte black Features of GGG QD Heavy Duty Sling Swivels: Heavy duty components Recessed QD button w/ tactile grooves Package Contents: GG&G Heavy Duty Enhanced Quick Detach Sling Swivel