What are the most reliable firearms that don’t need non 3D printed parts? I plan to print in PA6-CF unless someone can convince me PA12 is better, and I don’t mind projects that need you to tune your settings to hell and back.

I’m looking for a range toy/home defense tool. Handguns are preferred but I don’t mind other form factors. I plan to start with a harlot, but I definitely want something semi auto or slide action, I don’t like the idea of having to load after every shot

I don’t want my address to be associated with 3d2a so I’d prefer projects that don’t need kits or firearm parts, but if it’s absolutely necessary I can get my hands on a barrel liner.