I'm not trying to rain on your parade, but you might want to read up on those National Ordinance 1903-A3 rifles. I bought one from K-Mart when I was in high school in the early 60's. It wouldn't feed shells from the left hand side of the magazine. I took it back. I think the parts were all good original military surplus but the actions were newly made. Hope yours works out to be a good one.

Harry