Fully 3d printed ones, yes. But you can print all the plastic parts of a Glock, buy a kit of parts that don't require any verification at all and assemble a fully working one that is about as good as a genuine glock.
Or go a bit further with the FGC-9 or countless other similar things. The fewest actual gun parts used in successful firearms are in .22lr pepperboxes which use only barrel liners.
Here in Finland, I couldn't do any of that, because barrels, liners, trigger assemblies, magazines, ammo, they all require a background check and having a license to own a firearm. As would those printed Glock upper/lower parts, if I had access to the kits making them illegal to own.
Instead of, you know, the 3d printer?