Seriously tho, screw the bottle in fully until it stops and the bottle is tight. The last thing you need is the bottle unscrewing half way through a game, not only could that wreck your gun, it could wreck you too
Hey your scaring me
It won't wreck your gun, your gun just doesn't work with out air
and
if the tank drops of and lands on your foot you may break a toe
you will know if you haven't screwed it on far enough as you will hear an anoying hissing noice (air leaking) or a satisfiying 'silence' as the air seals