The KT pistol firing mechanism is unique...
The hammer rotates around it's axis in perfect balance, unlike most pistol hammers, which have the heavy spur and therefore will move forwards if dropped... if you drop a P-11 or any KT pistol, the hammer won't do anything.
The safety lies in the weight of the firing pin, and the spring tension in must overcome to ignite the primer. It's driven at pretty much warp speed by the hammer to do this...
And yep, there HAVE been drop fires.
I'm still trying to figure out how. Doesn't make a bit of sense!
I should note, however, that these have usually been in extreme or unusual circumstances, and extremly unlikely to ever occur if dropped from a normal height. I don't believe there's any more chance of an accidental drop fire with the P-11 than any other good pistol.
Flyer