Would you consider 3d-printed weapons as nice gifts?

My father is a bioengineer by trade. One of his side hobbies is weapons engineering. As a high school graduation present, my father gave me a series of weapons & ammunition that he personally engineered and printed on 3d-printers (handguns, shotguns, suppressors, semi-automatic rifles, sniper rifles, blades, swords, crossbow, bow and arrow).

I used these weapons for about a month now and they do perform just as well as the non-printed models which is what my father assured me would be the case. He told me that thanks to 3d-printing technological advancements and my father perfecting his designs, the previous limitations of old are no longer an issue. Weapons and ammunition can now be printed in any material and have a strong wear and tear.

For reasons unknown, possibly irrational, I still feel some disappointment in that they’re not originals. On the plus side, by law, they don’t have to be registered and there aren’t any serial numbers to trace them.

I guess what I am asking is if a product was engineered using alternative methods but yielded the same results, would you have a problem with it? Would it be an acceptable gift?