{HEAD ~ The firearm} 20 depicted is of {TAIL ~ a known design} and may be, for example, an M16 rifle commonly used by the United States military personnel 
depicted is of
{ HEAD ~ The firearm } 20 depicted is of { TAIL ~ a known design } and may be , for example , an M16 rifle commonly used by the United States military personnel
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH