Ultimate Arms Gear Machined Aluminum Sling Mount With System Rifle Shotgun Gun Mount Base - Fits Slings Up To 1 1/2" Wide Constructed Of Black Hard Anodized Aircraft Grade Aluminum - All Mounting Hardware Included. Allows The Use Of Standard Slings With Hooks And Or Cords On With 7/8" Weaver-Picatinny Systems. Can Be Attached To Anywhere A Weaver-Picatinny System Is Present. Standard Military Sling Swivel. Great For Rifles- Shotguns-Paintball & Airsoft With A Weaver-Picatinny System.