A hand grip 38 is mounted on the barrel for isolating the user from {HEAD ~ direct contact} with {TAIL ~ the barrel} 
with
A hand grip 38 is mounted on the barrel for isolating the user from { HEAD ~ direct contact } with { TAIL ~ the barrel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL