What makes a Glock automatic?

Answer 1

Glock's are for the most part, NOT automatic. They are SEMI-Automatic

which means that each time the trigger is pulled, the firearm discharges

one round. There are a few (most aren't in the US) Glock Model 18's that

are what is know as "select fire" models.

These models allow the user to select between semi auto mode and

full auto mode. Fully automatic fire is when the trigger is depressed,

the firearm discharges ammunition at a certain rate until either the mag-

azine is empty, or the trigger is released.