Fantastic info, I'll be sure to recommend this site to my friends who shoot 03A3's up at our range here in Northern NJ.

My apologies if the pictures I've added are not all that you were looking for. Did you mean remove the stock and photograph the underside of the barrel? I can do this but wanted to make sure that was what you were looking for before I did.

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The reason I thought the bolt was original was that it is also stamper with an "R" for Remington? and "32" for year? I was hoping the serial number 4000158 from around 1932 but as is quite apparent, I have not done my research here!