Are all Finnish Mosin Nagants shimmed to improve accuracy?
No. While it is common to see both M39’s and M91’s with stock shims this is by no means in every such rifle. These stock shims were also done in the post war period to improve accuracy. One can find shims in any number of Mosin Nagant models but it does seem most common in M39’s and M91’s. The shims can be pre-war, wartime, or post war.
