Sooo - I decided a few weeks back that I would dig out my old 2nd generation Springfield scope mount and reinstall it on my Springfield M1A. No particular reason but it does have a national match barrel and sights so it's worthy of a scope. After removing the charging guide, installing the mounting block in its place and cleaning the threads on the screws and block I remembered why I pulled the mount off to begin with - when the mounting block is in place you can't remove the bolt from the frame. That just doesn't make sense to me with a military firearm. It came back to me why I pulled it off to begin with. Any of you guys have practical experience with the 2nd generation M1A scope mounts? Just wondering.