Originally Posted by English
The Glock trigger safety is widely misunderstood. It is in fact one of three drop safeties. Without it, if the pistol was dropped on the rear of the slide the acceleration could make the trigger bar heavy enough to release the firing pin and fire the pistol as though the trigger had been pulled. In the same direction of acceleration, the trigger safety is ballanced about its mid point pivot and so is unaffected and continues to block the weight of the trigger bar, thus preventing the pistol from firing.
The trigger safety has no function or design intention to prevent the trigger being pulled back by anything -finger, jacket toggle, shirt and so on - that is pressing against the trigger except in the rare event that something is pressing just against the trigger without pressing on the trigger safety.
Yup! (Beat me to it!)
'Wisdom To One Is Foolishness To Another; But, Alas, A Fool Knows Not The Difference; And, The Road To Hell? ...... It Remains Well Trod By Those Who Should Know Better.'