Same Object, Different Events

So right now I have 4 different objects that use the same exact graphics and do the same exact thing but they are in different spots.

I have to make them different, because the way I am doing it is like this

"if button 1 is pressed, shoot turret 1"

There are 4 buttons and 4 turrets, and basically im copying the code over 3 extra times.

Is there a better way to do this?

Families. Look it up. Not available in free edition.

Well I can't just type "if button 1 pressed, shoot turret family"

All the turrets will shoot in that scenario.