Quick detachable cantilever mount featuring side clamp and dual levers on the left side of the mount, with tensioning screws on opposite side of the mount body. Absolute co-witness most clip-on NV units on AR platforms. Allows the scope to be mounted 40 mm/1.57” farther forward than with a non-cantilever mount. 0 MIL/MOA Height: 38 mm/1.5” Length: 151 mm/5.94” (mount body only) Weight: 270 g/9.5 oz 10-degree wedge included Note: Will not fit the SAKO S20 or rifles with 2-piece rails. As of 2021 QDP arms are provided with golden bronze slide locks for minimized friction.