P-Poor PPS
Hate to rain on this love fest, but I have very poor memories of these guns. Many NYC security firms issued them to armed guards 'back in the day' and they would come to our range for practice under contract. Many PPSs, if not most, were out of time. The guns would often lock up after very few rounds.
I was once issued an PPS when I worked briefly for a security firm. The grip frame (plastic grip) was very cramped and uncomfortable and the gun locked up after 18 rounds. I returned it to the gun custodian, who then issued me an old, beater S&W dog-leg hammer M&P (reblued over pitting) which would fire safely. The later-70s guns were quite nice, Saxon Pig has a fine example.