three 15mm screamer/bird banger to 37mm adapter
thingiverse
this lets you fire the 15mm flares or scare cartridges (screamer, whistle, banger etc) from a 37mm launcher simultaneously. there is a slot for a rubber band that will hold them in place so they don't all fall out if tipped. you simply replace an 209 primer at the base after each use. good for multiple uses. apply the rubber band AFTER installing the 3 tubes/flares or they may get stuck. no additional lift charge required. print rim down, no supports.
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