The Sling Rail Mount is a quick detach button swing swivel device that mounts to your rail allowing the addition of a sling. It is made of black anodized aircraft grade aluminum and mounts to all standard Weaver / Picatinny 1913 rails.Tactical quick detach sling mount. Compatible with standard QD sling loops. Features: Quick detach/push button swivel Mounts to all standard Weaver/Picatinny 1913 rails