I was thinking of doing this same thing. But would it be possible to go one step further, have the short barrel threaded and the brake just spot welded into place? Kind of like they do on the AMD AK's. That way later if you decide to get a SBR stamp all that needs to be done is spot weld removed?

Sorry to the OP for whoring your thread but I thought I would just ask in here in lieu of making a whole new thread.

Thanks.