Does the job - B-Square Mosin-Nagant "Scout" Mounts (Long Eye Relief) - Polish 44, Russian 44, Chinese 53, Blue 18522

This effectively allows you to mount a scope to your Mosin. It simple to set up, but not necessarily easy, depending on how difficult it is to disassemble your front sight. I'm a little worried about it moving from recoil, but it hasn't budged yet.
Pros: Functionally mounts a scope
Cons: Is a little finiky

This review was written in the old system and had content requirements that are different than reviews written today.