Sorry I got it wrong. It wasn't the CZ52 that was a jam-o-matic, but the cz50! Little .32 acp piece of junk. Funny thing is that I sold it on gunbroker.com, listed ALL of its eccentricities (being honest here) and got 3x what I paid for it! PA63 is 8 rds vs. 6 in the p64 right? I'm going to have to keep my eyes open for both at the next gun show.