Something I would be curious of. I imagine a lot of you guys have A5 scopes.
The A5's the Marines and Army used, will often have a modification done to them if they were used on a M1903 to clear the bolt.
This ring I have arrows pointed to is often cut down. When it's not, the bolt of the m1903 will often hit and cause you to have to push the scope forward to cycle the bolt. But with it cut down, the bolt will usually clear.
I've even found this modification on the Mann Niedner conversion scopes, even though they don't need it to clear on the Mann Niedner as they are taller. My hunch is they were used on the Marine mount A5 rifles such as above first, which needed it to clear the handle, then later had the Mann Niedner conversion done to them in the late 1918 and up time period.
If you guys have A5's, check it out to see if this has been done to it. I've seen a lot done this way and you can see the grind marks of where it was cut down.
A lot of the Government purchased A5 scopes were sold post WWI through the NRA magazines like Man at Arms. I bet there are some on here and I don't think this is known, as I sort of dicovered it by looking at pics and then existing examples.
