Actor Following Mouse Position

Sooo, I was able to get the gun that I have to follow the mouse position, but when I added a move rule so the actor can also move; after the actor gets to about the middle of the screen it flips over and if I move it back to the left side of the screen then it follows again. I can't figure out why the bloody thing is doing that so if any of you know how to fix it could you let me know here please.