- it lacks the stopping power of P99's 9 mm ammunition. I'm no expert, though, so I may be wrong about this.
For me, the Walther PPK is culturally significant with Bond. I love it. However, while I do love it, there is the argument that yes, it is indeed outdated, especially for a modern spy. The Walther P99 is good, but I have always called for Bond to switch over to the Walther PPS. It's basically an updated model of the PPK, but it's taken more from the P99 and is chambered in 9MM. While it only holds 6-8 9x19MM parabellum bullets, it's just enough and isn't the overkill that is the 16-20 9x19MM bullets the Walther P99 has.
As for disecting the weapons: the Walther PPS and P99 are chambered in 9x19MM Parabellum bullets, whereas the Walther PPK is 7.65MM Browning, or, .32 ACP. And of course, 9MM pistols are generally larger than that of .32 pistols. Diameter for the PPK is .312 of an inch and a 9MM is .355 of an inch. A 9MM generally fires at a high velocity rate, compared to the .32. The 9MM is of course better than the .32 ACP, but it's not going to really improve or increase stopping power drastically. If it's stopping power, than Bond should switch to a pistol chambered in .40 S&W.
The .32 ACP will only work if it hits vital areas with it's target, and of course, Commander James Bond is a weapons expert

With the right kind of ammo, the .32 could be on the same level with .38 Special and .380 ACP, which would slightly tie the gap between .32ACP and 9MM, but again, nothing too marginally. The 9x19 Parabellum bullet is much heavier than the PPK's .32 ACP, but it's not a big stopper like a .40 S&W or .45 ACP. However, a 9MM is much more lethal when loaded into a submachine gun (Duh! Lol), which shows it's versatality, whereas pretty much anything chambered in .32 ACP is basically what's considered a "pocket pistol" like the PPK.
Now the pros and cons of Bond with both, a PPK and P99. With the P99 Bond is gaining more range than the PPK due to the 9x19 Parabellum bullets and the high velocity that comes with it. He also gains a damage increase too. However he is much more difficult to conceal it. With the PPK, it is only most lethal when in close quarters, as it really isn't designed to be a range weapon, but he is able to conceal it.
Unless Bond wants to upgrade to something chambered in .40 S&W and have a hard time concealing it, I would go with the PPS, small like the PPK and chambered like the P99. Hope this ridiculously, long and boring post helps
