The Atlas BT69 Gen. 2 CAL bipod mounts directly to any 1913 Picatinny rail via low profile 2 screw clamp assembly and is prefect for shooters who don’t need the Panning feature. Features: Height range: 6.1” – 12.3” (8.2” at 90°)45° preloaded cant Leg positions: 0°, 45°, 90°, 135°, and 180°Weight: 14.5 ounces B& T Industries Atlas CAL Tall Bipod 2-Screw 1913 Rail Clamp BT69