yes you have to complete 15 tests to get it. 10 are multiple choice
2mm rim fire
2mm in case length.
Check for dealers in antique firearms. The Dyson Le Petit Protector Ring Gun was made in the 1800s, and used an obsolete 5mm Pinfire cartridge. These are rare, and come up on auction very infreqently. Big $$$$ item when they do.
Go to www.bryndumlund.dk and find info on Christoph Funk Gewehrfabrik, Suhl, Germany
14k gold dermal tops 2mm size
Was available in both pinfire and center fire for custom European shotguns. Good luck finding ammunition or components for making your own.
2mm 2mm
2mm 2mm
6mm is thicker than 2mm. It has a greater thickness of 4mm.
2mm 735 m en mm
A standard push pin is approximately 2mm in size.