I just received this letter from a friend who wants to build a dummy out of his Suomi. I did find it very interresting, and some of the information contained within, could be adventagious to some of the questions being asked here. This is the ATF's response to his email technical question...
Mr. Blank: Thank you for visiting ATF's Website. As stated on our site, generally, we do not answer technical questions via e-mail, but I contacted our Firearms Technology Branch (FTB) and was advised the following:
"RECOMMENDED PROCEDURE FOR BUILDING DUMMY GUNS"
A Machinegun receiver that has been properly destroyed may be used to assemble a "dummy gun" that is not subject to NFA or GCA controls. When utilizing sections of destroyed machinegun receivers to build a dummy gun, and the severed sections are welded back together, the dummy gun receiver must be at least one inch shorter than that of an original machinegun receiver. The bolt, if present, must be welded to the receiver in the closed position. The breech of the barrel must be welded closed and an obstruction welded in the barrel. Alternatively, a solid metal/plastic bar in the same shape and configuration as the original model may be used s a "dummy receiver".
Please be informed that an attempt to fill in the cut away section of a receiver that was previously cut into sections, with commercial glues and non-metal material could constitute manufacture of a machinegun. For example, by filling in parts with certain modern glues and epoxies, having the same tensile strength as ferrous metal, you may be manufacturing fully functional machineguns".
If you have any further questions, please call them on 304-260-1700. Regards,
I would like to get to the bottom of this before anyone gets into trouble. I would have to agree with many of the posts here that these receiver pieces could easily be considered junk, but they could also be classified as just the opposite as what we all would hope.
Has anyone just up and asked the ATF their stand on this matter of rewelding?
Surely they would have the answers we need instead of wondering and speculating with all sorts of different scenarios?
Great site BTW. I am serious about my kit, but like the rest of you would hate any complications in the future.