Need help with enemy bullet not destroying its self.

I have the player bullets working fine but when I went to do what I did for the player, to the enemy I found a real bad bug. I am utilizing collision with on hit take damage and overlaps. Like I said the bullets being fired but the player work perfectly but the enemy bullets only get destroyed if the hit me. if i nick one with my bullet it stays as well if it hits the walls or anything. PLEASE HELP!

Add collision responses for more than just Pawn to your bullet.
Another thing I do is add a timer to destroy my actor after a certain amount of time.