Maybe Jim can help me figure this out…

I get it, right down to the “camming” up and down of the bolt and locking/unlocking the lugs. A Nagant action is not the easiest to cam over in the first place! I’d have picked a Mauser “cock on opening” action myself. But it’s interesting. The old saying “install windshield wipers on a goat’s butt, and make them work”, lol.

The late Bill Ruger Sr. Finalized a functioning conversion of a Savage ‘99 rifle to semi-auto as an engineering exercise. I never laugh at lunacy applied with such passion.