1891 Mosin Nagant Infantry Rifle, Soviet Production

[Homer2]

That rear sight plate alignment seems to be pulling your shots to the right. It looks a little more crude than a normal Finn plate rear sight as well. The Finn versions were originally for the M28, but it seems they were occasionally used as replacements for M91s as well. I'd call this one an unknown origin, leaning toward Finn owned. Just in case, I'd leave the initials on the stock alone as they may have been put there while in service. Kind of a personal touch to the history of the rifle.

Here is a link to a not-so-recent discussion on my 1926.
The Russian Mosin Nagant Forum View topic - Finn 1926 Tula M91