[Myrddin]

If it's like mine the safety is part of the trigger. He probably caught the trigger while holstering it.

It is a very easy error to make with a Glock. Most of the holsters for Glock cover the trigger guard. If you leave your finger on the trigger while pushing the gun into the holster, the holster will shove your finger back into the trigger. The trigger pull is pretty light.

[Eaker]

If you leave your finger on the trigger while pushing the gun into the holster, the holster will shove your finger back into the trigger.

Your finger should not be on the trigger unless you have something in your sights that you want to destroy.

Eaker