Ultimate Arms Gear Sling Swivel Stud Adapter To Weaver Picatinny & Stud Attaches Grip Light Laser Rail Mount QS Quick Shoe System + Bipod Saiga Rifle 7.62 .308 .410 Package Includes Stud Mount Adapter + Bipod Mounts to Existing Swivel Stud, Provides a 3 Slot Picatinny Rail Section for Rail-Mounted Accessories such as Grips, Bipods, Lasers, Lights etc. Features A Side Swivel Stud To Maintain Continued Use of Shoulder Strap. Easy to Install. Weight - 3oz. Deluxe High Tech Durable Machined Aluminum Quality Bipod With Non Slip Rubber Feet, Critical Position Locking, Spring Loaded Legs With Adjustability Features.