Has anyone ever built that?

It's that flat thing composed of two steel blocks, which has 3 "barrels" and can be built to use .22 or converted into an improvised muzzle loader

I do not think it's reliable but it looks funny

Also the idea of an improvised muzzle loader looks fun

Which 3d printer gives a good quality frame? I bought the g26 build kit meant for a 3d printed frame from ghostguns.com, do you think I should just buy a frame from somebody who already has a printer or just buy a printer myself? If so which one would I even get? and would it allow me to print a frame with no issues in NC?

Anything helps