The SLA Sling Picatinny Attachment connects front part of the sling to your Picatinny rail. Advantages: Accepts All Slings up To 1" (25mm) 6061 Aircraft Grade Aluminum, CNC Machined Mounts To Any 1913 Mil-Std Picatinny Rail Hard Black Anodized Ultra Light Weight Easy to Install With One Locking Bolt SPECIFICATIONS Weight 12 gr Width 34 mm Height 20 mm Length 13 mm