does a glock 17 have a safety
The Glock 17 has three safety features and they are the trigger safety, the firing pin safety and the drop safety. The Glock 17 does not have an external safety lever but will fire only if the trigger is pulled fully.
The Glock 17 actually 3 separate safety mechanisms. For a complete overview of the Glock 17, please visit this website: http://www.ask.com/wiki/Glock_pistol#Safety