an unmodified selected caliber handgun having a barrel receiving cavity with a mounting surface for receiving {HEAD ~ a live ammunition} firing {TAIL ~ barrel} 
firing
an unmodified selected caliber handgun having a barrel receiving cavity with a mounting surface for receiving { HEAD ~ a live ammunition } firing { TAIL ~ barrel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL