that rifle is from the transitional "modified" period. I cannot see the top of the receiver, but about that time, they started to machine notches there just before changing to the 1903-A3. The sight base correctly has no lightening cut outs. I have a rifle close in serial number. The stock should be a straight stock, no finger grooves, with a smooth butt plate. New Old Stock hand guards are pretty easy to find. All of the parts should be marked "R". There are subtile differences between Remington parts and Springfield parts. I found a new old stock replacement stock for my rifle on E-bay. I had a lot of fun shagging down the "R" marked parts. New 1903 pattern sights are also plentiful, to replace your bubba welded front sight. No idea why it is up there so high.
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