Small Primers for homemade snap caps or dummy rounds

A printable small rifle or pistol primer.  These are good for safe firearm function testing, they allow the gun to be dry fired against the plastic primer.  After snipping these apart, I used a Lee hand primer to load these into my 9MM dummy rounds.  I used eSun PLA+ (https://amzn.to/3tO3GcI) in orange so they could easily be identified from live rounds.