A Glock safety doesn't prevent you from pulling the trigger, but it requires you to pull it correctly which can reduce (but not eliminates) accidents. I believ

A Glock safety doesn't prevent you from pulling the trigger, but it requires you to pull it correctly which can reduce (but not eliminates) accidents. I believe earlier versions had an initial heavy trigger that lightened once it was past the "safety" point. I don't know first hand, this was just from a passing discussion with a police officer.