I have a 1918 Enfield SmLE lll* that I just picked up pretty cheep. It has DP in raised letters (how is that done??) on the right side of the rear stock. I've taken it apart and checked the headspace and everything else I know to look for and everything looks good. All the parts and springs etc. are there. The barrel is a little bit frosted but not bad.

My question is, when they turned a rifle into a Drill Purpose rifle, did they mark it anywhere on the metal parts?
I find no other DP's anywhere on it.

The rifle looks good except for the DP on the stock. I'm thinking maybe the stock has been replaced with a "better" stock from a Drill Purpose rifle sometime in the past.

Another question I have is what was the most common reason to turn a rifle into a DP rifle?

Thanks in advance,
Dave