Hello all! I recently purchased a fine looking Remington 1903a3, with what seems to have all matching Remington parts. I’ve done some basic research on the markings that can be found on the stock, but one has eluded me so far. There is a single “A” stamped above the circled “P” on the underside of the stock. From what I’ve seen there weren’t any Arsenals which rebuilt the 1903s that used a single “A” as their identifier. Anyone know what it could be ?