a rear cover being mounted on {HEAD ~ the mount surface} of the base and having {TAIL ~ an outer surface} and a handgrip being formed on the outer surface 
a rear cover being mounted on { HEAD ~ the mount surface } of the base and having { TAIL ~ an outer surface } and a handgrip being formed on the outer surface
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH