Black oxide finish, solid precision machined construction. The AR quick detachable sling swivel sling will allow you to mount a single point sling with ease by using the hook of your sling. This QD sling swivel freely rotates 360 degrees for easy carry and maneuvering of your rifle without tangling the weapon and getting in your way. If you need to release your weapon you can push down on the button and it will quickly release from whatever you have it mounted to, allowing you to drop your weapon or hand it to someone else. No fumbling with the hook trying to unlatch it when every second counts.