MAC-10, M-10 Style Receiver Flat Frame Flat
Found in the basement and just come out of long-term storage!
In this listing are MAC-10 or M-10 style receivers or frame flats from which legally permitted firearms may be constructed. These flats were produced from original machinist drawings by a now-defunct maker and are accurate to within .005″! There may be a small amount of surface discoloration from the manufacturing process but no pitting and that of course will not be a problem for the home builder as the flat will be welded, ground on, and finished in a way that will probably require that it be dipped in some kind of aggressive cleaner anyway. Made of high-quality 12 gauge mild steel, these flats are just the thing for your firearm project and are ready to go!