The Atlas BT69-NC (No-Clamp) Gen. 2 CAL bipod mounts via 1.100" 2-hole pattern and is compatible with the BT19, BT70, ADM-170-S, ARMS 17S, TRAMP, LT171 Features: Height range: 6.1" - 12.3" (8.2" at 90deg) 45deg preloaded cant Leg positions: 0deg, 45deg, 90deg, 135°:, and 180deg Weight: 14.2 ounces