[Oatka]

I like this one better, in 45 ACP, for $700:

Accepts 25-round Glock mags.

[marktwain]

Here is 9mm semi-automatic pistol/carbine people can make for themselves.

About $600 in initial tooling and materials.

About $100 in materials for each copy after that.

About a 10 days of work, most of which is having a 3D printer print parts.

Making the barrel with electro-chemical machining takes about a day for the first barrel, perhaps two hours each after that.

It uses Glock magazines or 3D printed copies of Glock magazines.