UTG Keymod Sling Swivel Adaptor for QD Sling Swivel Applications. Precision Machined from Aircraft Grade Aluminum with Hard Anodizing Matte Back Finish. Innovative Compact, Lightweight, Super Low Profile Keymod Base with Made in USA Keymod Nut for Tight Fit and Max Strength Locking Strength. Compatible with Standard Keymod Slots on Keymod Rails to Allow Flexible Sling Attachment without Additional Picatinny Conversion. Accepts any Quick Detach Sling Swivel with 0.37 Diameter Swivel Stud. Simple and Friendly Installation, No Gunsmith Required. Package Complete with Installation Screws and Tools