Brand: NcSTAR Includes: 3 separate Adapters: AR-15 GI Handguard adapter, Universal Rifle Barrel mount, and Weaver/ Picatinny type rail adapter with Sling Stud Materials: 6061 Aircraft Grade Aluminum. Compatibility: Rifles with Picatinny systems. Weight: 10.2 oz Length: 5.5" to 8" Color: Black Precision Grade Bipod with Smooth Tension Legs. Height: 5.5" Collapsed - 8.0 Fully Extended. Bipod directly mounts onto most Sling Swivel studs. Includes 3 other adapters for flexible installation. Includes 3 separate Adapters: AR-15 GI Handguard adapter, Universal Rifle Barrel mount, and Weaver/ Picatinny type rail adapter with Sling Stud. High Quality Construction with Hard Anodized Aluminum and Steel construction.