This is the original Magpul RSA quick-detach (QD) sling mount for 1913 Picatinny rails.

This Magpul QD mount provides a forward attachment point for push-button QD slings, including Magpul slings. 

Features:

• Machined from corrosion-resistant steel
• Low profile, beveled design
• Places attachment point at optimal angle
• Anti-rotation design to prevent swivel from spinning
• Mounts to Picatinny rails
• Compatible with QD sling attachment points
• Platform: AR15, M4, M16
• Made in the USA