Magpul MAG540-BLK Sling Swivel Black Manganese Phosphate 1.25″ Quick Detach/Push Button for AR-15, M16, M4

Push-button quick-detach sling swivel for 1-1/4″ webbing, compatible with QD sling attachment points. Manganese-phosphate finished steel. Combine with the MS1 Sling for a dedicated two-point sling or with an MS1 MS4 Adapter for a two to one-point convertible sling. Made in the USA.