Can a Semi Auto be legally made Full Auto? I know I am being lazy, and I am sure if I searched enough I could find the answer. I am wondering if a guy gets the proper tax stamps, if you can get the parts to make an AR15 full auto? My guess is no, because it would be listed with the ATF as a semi, and that’s a cradle to grave listing. I only asking because a full auto anything is so expensive. Thanks!