Magpul MAG529-BLK ASAP Sling Attachment Quick Detach AR-15/M4 Compatible w/ Mil-Spec & Commercial Buffer Tubes Black Steel Ambidextrous $28.45
Magpul MAG500-BLK ASAP Sling Attachment AR-15/M4 Compatible w/ Mil-Spec & Commercial Buffer Tubes Black Steel Ambidextrous $32.25