well i think this thing is higly illegal
secondly you caqn put a life round in that barrell
secondly it does not make sense to have a flame come out to ignite a co2 cylinder.
the manufacturer should have take out the round in the first place , we can laugh now.
the same happened to me , luckely i pointed thing away from me.
we could have easely lost a eye or something
here is the hidden cartridge

so A is the trigger
B contains a 6mm Blank cartridge
c is the co2 container

i thought a would just pop a pin inside the cartridge to go off , however they use a explosive to trigger the co2.
funny when your fuselage is full of vapours....