It doesn't happen twice to anyone trained as the Russian OMAN special troops, mostly veteran Spetznaz personnel with Afghanistan and Chechnya combat experience, are trained.
Place a finger inside the trigger of your PM Makarov or APS Stechkin around their instructors, and they'll swat your hand with the *instructor's batons* they carry, frequently removing the offending finger/s.
Those boys play rough. But there's a lot to be said in favour of their practice. And they don't put their fingers on their triggers *by accident.*
Rooshian *instructors baton*:
Hmmmm, I would think that applying 5 lbs of pull to a Glock trigger is something most people would have to consciously try to do. I think by far the majority of these discharges are caused by a round left in the chamber after removing the magazine (the trigger must be cycled to begin disassembly) and the person consciously pulling the trigger. All the rest is fluff thrown up as an excuse for stupidity. I'll say it again a different way, no manufacturer puts a safety on a gun to keep it from firing when the trigger is pulled, period.