Auvoinen ApertuuriAvanne™

thingiverse

Aperture sight for Finnish Mosin-Nagant rifles with m39 style rear sight. No tools or modifications needed - the sight clicks into place on the rear sight base and rests flat against the receiver. Tested with full-power current war ammo and lead bullet handloads, m/39 arsenal build. The aperture part likely requires a tall front blade sight, as it did on my gun, but this may not be necessary for every rifle. In fact, I've only tried it myself and one other shooter, both of whom loved the results. To print the aperture part, lay it flat on its back, with the side that faces your eye facing up. The main part could easily be machined out of metal if desired.