Originally Posted by lezinterracial

I made an AK from parts off the internet. It was ugly as heck, but it worked.
Used an 80% receiver flat.

I just had to bend the flat with a homemade jig. Would have been alot easier with a 20 ton press. Then attached to the front and rear trunnion with screws, rivets would have been prettier.

I would say an AK receiver is the easiest to make.

Maybe a Sten would be easier. The receiver tube is just a tube. But if you get caught with a homemade open bolt Sten, you go to prison. Making it closed bolt semi-auto looks like a bitch.