NcStar M1A/M14 Bipod with Weaver Quick Release Mount/Universal Barrel Adapter Included (ABUQ14) M14 Style Bipod with Quick Release Weaver Style Base Includes Universal Barrel Adapter Mount that Attaches to Most Standard Rifle Barrels Weight: 21.5 oz. Length:7.2" (Legs Collapsed) to 9.0" (Legs Extended)