Easiest way that I've found to tell a pre-64 is by looking at the shell carrier. If it's flat, it's post-64. If it's machined and slightly contoured it's pre. It's kinda hard to explain but if you get one of each side by side, it's easy.
IIRC, the pre64 has a screw in the plate that drops down when you work the lever. Post 64s do not.
Also, I have a very clean pre 64 M94 in .32WS. I wonder if I can get some sucker to go to $7,000+ for it. Might even be able to afford primers if I got that lucky.
Paul B.
