Allen No Hardware Gun Sling Swivel Set Black. Also provides a wood screw for buttstock with white spacer and complete illustrated instructions. Specifications for Allen No Hardware Gun Sling Swivel Set: Manufacturer: Allen Color: Black Features of Allen Swivel Hardware without Swivels Mounting Hardware Set for Bolt Action Rifles Short Forend Screw for Wood Stocks Threaded Screw and Nut for Synthetic Stocks Wood Screw for Buttstocks with White Spacer Package Contents: Allen No Hardware Gun Sling Swivel Set Allen 14424: No Hardware Gun Sling Swivel Set Black