FIG 2 shows a side view of a modified blank cartridge for {HEAD ~ use} with {TAIL ~ the novel replaceable blank firing barrel} 
FIG 2 shows a side view of a modified blank cartridge for { HEAD ~ use } with { TAIL ~ the novel replaceable blank firing barrel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL