The pistol grip may house {TAIL ~ the camcorders supplemental controls} or {HEAD ~ battery pack} within the housing 
The pistol grip may house { TAIL ~ the camcorders supplemental controls } or { HEAD ~ battery pack } within the housing
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH