I recently acquired a new-to-me RIA M1903 at an auction. SN 275,660, the barrel is also RIA dated 12-17. I've picked up a copy of Ferris's book on the RIA M1903, and have read a lot of threads on this forum but still have some questions, hopefully some of you can help.

1. I believe the bolt to be a SA replacement based on the steel lot code, "J1" on the bottom of the locking lug. I also noticed a gap in the chart on the Vi shooter's page for my specific serial number range. What is the correct bolt for this rifle?

2. The magazine cut-off switch is in block letters. Is this correct? Is there anyway to to tell whether this piece is a replacement?

3. The stock has a single-bolt & the finger grooves. No cartouches remain, even on the fore end. Are there any other characteristics I can look for to determine whether this is an RIA stock?

4. The handguard has a high slightly convex hump, but there is no fixturing slot. Ferris states that RIA eliminated this at some point during WWI. Does anyone know when?

Thanks in advance. Any other insight others can offer me into RIA M1903's produced during WWI would be greatly appreciated?

Thanks,
Matt Wright
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