The Daniel Defense Rail Mount QD Swivel Attachment Point is designed to allow the operator to mount the popular Heavy Duty Push Button Quick Detach Sling Swivel. This mount allows the operator to mount the swivel anywhere along their rail system. The Daniel Defense Rail Mount QD Swivel Attachment Point has been designed to limit the rotation of the swivel to prevent the operators sling from becoming tangled. This mount includes a Heavy Duty Push Button Quick Detach (QD) Sling Swivel which accepts sling straps up to 1.25″. Made in the USA.