any gun with firing pin stop can reduce the possibility of accident triggering?

That's what they're DESIGNED for, at least; things like the Glock and Series 80 1911s have what are known as "passive" firing pin safeties, while many modern revolvers (Rugers, S&Ws, etc.) have "transfer-bar" mechanisms that will prevent firing UNLESS the trigger is pulled completely.
 
Many firearms with an exposed hammer have or had a half #### position, and includes both rifles and handguns. Should the hammer slip off the thumb, it fell to the half #### position rather than firing, but as stated above, if the trigger is in it's rearward position the piece fired. The transfer bar system does away with the half #### notch, prevents the hammer from falling and firing the round if the trigger is forward, and allows a revolver to be safely carried with the hammer down on a loaded chamber. In either system the gun must fire when the trigger in it's rearward position, making the transfer bar a debatable advantage.
 
The Firing Pin Safety might help to prevent accidental triggering, especially on a 1911 series 80, where it adds 2 pounds or more of trigger pull weight.:D
 
PoFF said:
The Firing Pin Safety might help to prevent accidental triggering, especially on a 1911 series 80, where it adds 2 pounds or more of trigger pull weight.:D
Click to expand...

I guess Firing pin lock is different from firing pin stop? is that right?

my CQB has firing pin stop,but it belongs to 70 series 1911,it has no the third safety.
 
Your right about that. The trigger on my series 80 was heavy and long. Once we put in a kit and cleaned up the sear {only) the trigger pull is excellent.
 
If you were to drop a loaded 1911 directly on to it's muzzle, on to a surface that's hard enough not to absorb the impact, it is possible for the firing pin under it's own inertia to hit the primer hard enough to discharge.

For the love of all concrete floors, please install a firing pin safety in all guns.

It's a lawyer inspired device. When the revolution happens, and I'm Dictator of the world, the Canuck223 Checka will force all product liability lawyers to witness the removal of said device prior to their public execution with said pistol. All Hail our benevolent leader!
 
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