Looks like some sort of para flare
Dave . Is it the inside of a signal whistle ? I can't remember the designation but we used them in WW1 .
Mike, Is this what you are after?View attachment 81421
I'm a bit confused here guys.
I thought the Fliegerfaust projectile was short and had 4 spring fins on it.
What is the above picture of? Is it the projectile in a case.
But the bottom of the case looks like it has nozzles in it. Does the whole round leave the launcher and then separate in flight?