I have a an older PPK/S, from 1970. I was reading the instructions and it said that with the safety off, hammer down that the hammer is blocked by a locking piece. Would the pistol be drop safe in this mode for carry.
the hammer is blocked from hitting the firing pin in the the decocked position. However, there is nothing locking the firing pin so that if the gun is dropped with the barrel down, the momentum of the firing pin could potentially be enough to touch the primer. A spring is holding the firing pin back but theoretically the firing could move forward. The firing pin is locked with the safety on.
MGMike and I had a long discussion about the safety of the PP platform chamber-loaded and safety off. His contention was, that under the right (wrong) circumstances, it was possible to have a drop discharge.
The Cliff's Notes version; if you want to be absolutely safe, engage the safety. If you want to be relatively safe, don't.