Fortis Manufacturing’s RAP (Rail Attachment Point) Quick Detach Sling Swivel Socket is typical of Fortis equipment and accessories as a durable military grade accessory that looks great and functions flawlessly! This is a fantastic accessory for the military and law enforcement professionals, but it’s absolutely essential for the competitive shooter! It mounts to your forward picatinny rail giving you a Quick Detach sling swivel socket that occupies a minimum amount of space on your rail. Includes a 1.25″ QD swivel.