Help with machine gun animation.

So, I'm trying to animate my character using a machine gun a la Metal Slug. I've got the animation and I've got it set so that when I press the fire button the animation plays, but if I try and rapid fire the button the animation will start over each time, repeating the first two frames.

How do I set it up so that the firing animation can finish and then repeat while I'm continuously pressing the fire button?

Maybe this?

Condition:

-"AnimationName" on finish

--Touch is touching / Keyboard key is down

Action

-Start "AnimationName" from beginning

Condition:

-On touch start / On keyboard key down

Action

-Start "AnimationName" from beginning