You don't need a printer, this is the second rifle I built, it isn't from a kit. First one didn't amount to much, but this one is a keeper. I hunted with this one from 1981 until I couldn't hunt anymore. I still have this and a little .36 I made for daughter Mary's 8th birthday. It has brass and pewter hardware, never kept polished because it made the gun too visible to deer. . This one is built around an old lockplate I picked up for 50 cents, but lockplates are easy to make. With the gain twist barrel you can push a round ball really hard, ball would end up the size of a quarter under the hide on the far side, deer was always DRT!
If I had wanted to build a modern design I would have figured out a way, it is all just carving wood and metal. I suppose it would be a problem for Chuckie Schumer, he probably can't change a light bulb on his own.
You cannot regulate human intelligence and determination, they will always find a way, and tyrants always hang, sooner or later.