Looks legit to me...So if I understand you it hasn't been demilled which was done by torch cutting the bottom of the barrel, spot welding the barrel to receiver (these were done on the bottom so as not to be seen when the rifle was reassembled) and spot welding the cutoff to prevent the bolt from being removed. If you got a fully functional 03-A3 parade rifle fo under $400 I think you did very well.

__________________
Randy