the unitary one piece elongated metal blank firing barrel having {TAIL ~ a cavity} formed inside {HEAD ~ the unitary one piece} elongated metal blank firing barrel for restricting the unitary one piece elongated metal blank firing barrel to not be able to use the live ammunition cartridge, the cavity having a diameter that is 3% to 10% smaller than the live ammunition cartridge, 
the unitary one piece elongated metal blank firing barrel having { TAIL ~ a cavity } formed inside { HEAD ~ the unitary one piece } elongated metal blank firing barrel for restricting the unitary one piece elongated metal blank firing barrel to not be able to use the live ammunition cartridge , the cavity having a diameter that is 3 % to 10 % smaller than the live ammunition cartridge ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH