Ok.
The flare/bangers are fired by .22 acorn blanks.The same blanks used for starter pistols. They're very small. DO NOT USE A .22 RIFLE BLANK! ! !
It will blow the plastic casing into shrapnel the instant it goes off. Embedding pieces into you, your hand or both.
They're glued into the plastic flare/banger casings.
The banger projectile itself is a thin alum case with a burning delay disc fuse, fixed into the bottom. Filled with the explosive powder and a plastic disc press fit to the top. The powder is basically primer compound.
Could you reload it?
Well you could warm the plastic case and hope the glue lets go allowing you to put a new acorn blank into it.
But. Creating a fused case full of initiator or booster compound? You're going to need specialized non static production equipment with grounding loops. Because one spark and you're injured or dead.
If I were to do it myself. I'd use paper rolled around a pencil. Firework fuse in one end about 1/4 long. With the end even with the paper. The inside would have tissue or something packed around the rest of the fuse inside. I'd fill it with black powder. Cap it with a slice of wood. And wrap the whole thing super tight in paper masking tape until I could fit it inside the plastic casing.
Which is a S**T load of work. When you could just order them off
https://kodiakcanada.com/collections/launchers-and-bangers?page=1
