37mm Dummy Round

I recently was given a 37mm Signal launcher and wanted to practice but have something for the firing pin to strike. i tested with an Ordnance Group Tac-D i designed it to use these rubber weather seals cut to 2.5mm long
Seals: https://amzn.to/4quAx1n
then i super glue them in. i will be revising soon once my rubber seal arrives

Newest file is .1mm larger for the rubber stopper, and got rid of the curves in the primer hole