It is equipped with a large number of 1/4"-20 threaded holes, ARRl 3/8"-16 locating holes, cold shoe and NATO Rail for accessories mounting. Lightweight cavity design, with Nato rail, cold shoe, ARRl 3/8"-16 locating hole（Take the top screw out and it's 3/8"-16 locating hole, put it in and it's 1/4"-20 thread mounting hole）& 1/4"-20 thread mounting holes on the top, fit for multiple top handles, such asNATO top handle， ARRl type top handle and 1/4"-20 thread mount top handle.
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