I purchased what I think is a legit 1903a4. The serial number is in range for the first serial number block for the 1903A4. Serial number 3,413,769. So really no question on that. The question that I have is on the scope for the gun. I looked at several websites and I can’t figure out if the scope is correct for this serial number range. What I read is that they could have come with a model 330, 330-M8, M73b1, or the m73b2. Mine is the model 330. I am trying to find out if this serial number range would have come with the model 330. Also looking to see what is not correct on this rifle. I don’t know a ton about them.