I am working on assembling all the special parts and figuring out all the correct modifications to make an 03A3 into a "correct" - except for markings, of course - physically (and functionally) exact copy of an 03A4. As an older, heavier guy, this would be a match I could do well at!

One thing I have not heard much about is doing the Bolt Cutout in the side of the 03A3 Reciever to give clearance for the 03A4 modified bolt to close entirely, all the way, as all the originals were done. As I recall off the top of my head, the cutout I measured in a for real 03A4 last week was about .645 wide and on a 45 degree angle, with the back edge rounded to get rid of a sharp corner behind the bolt root, lining up perfectly with an original 03A4 stock.

If anyone has done this - how about sharing your experience? Any observations that might be helpful? CC