If you haven't seen them before, check out
Mojo's Website, they make an amazingly well thought out aperture system for most military surplus guns (including AK's and SKS's). I've just finished installing the sights and figured I'd make an instructional video. The install process is extremely easy and 100% reversible if you so choose. I have wanted this setup for a while because it offers a low weight alternative to having a scope while also increasing the effectiveness of iron sights on my Mosin. I'm looking forward to getting to a range and seeing what can be done with this ingenious setup:
VIDEO