Glock has a number of safety features built in, one of which is the protrusion on the trigger that acts as a safety.
Glock says this is a safety. Not me. OK?
I'm not bitching at you, but I am trying to point out the differences in when it goes bang or not.
Yes, it's a safe. As long as the trigger is not depressed by whatever means. Trigger pull is typically the last step in firing a weapon.
One more time. It does not have the safety features of either a revolver, or a 1911! With the 1911, the grip safety has to be depressed as well as the trigger. With a revolver, it is going to require twice the pressure to depress that trigger.
And that's about all there is to it.
Bang! (now how did that happen?)