I'll say one thing with authority and experience--once you do this little process and mount tight to the barrel rather than a sight step add-on, this beast turns into a whole different animal. I had one of those drop-in adapters for a while and absolutely hated the results--which is what led me to look closely and find that darn dovetail. Since then it's gotten scary for a mil-surp, especially a Mosin 91/30.
"Why is is called Common Sense when it seems so few actually possess it?"
Guns only have two enemies: Rust and Politicians.