This is the Magpul RSA Rail Sling Attachment.

Welcome to the low-profile sling attachment you’ve been searching for!

Attaching with ease to any 1913 Picatinny rail, this high-quality steel sling attachment is compatible with a plethora of rifles. Passing a stress test of over 300 pounds and being made right here in the USA, there isn’t much more you could ask for! 

Order your Magpul RSA Rail Sling Attachment while you still can!