I need ID on the items below - I suppose they are spent flares, but that’s all I know.
The longer tubes are aluminium, opened at one end, 26x103 mm
The shorter ones are zinc coated steel, 25x44 mm and fit (barely) inside the larger ones
I also saw the longer tubes with white and yellow paint at the base - or is that the top?
The geometry of the signs was different - if I remember correctly two dots on one and an elongated rectangle on the other, but can’t remember which was for what color.
How do these things work? Which is the case and which is the “projectile” ? What is their designation and origin?
Is there any online reference, description on these and the gun which fires them?
Any help is appreciated