Disable Damage Raycast?

Hey guys. First time posting a question here. I'm pretty new at Unity and have been learning using YouTube and other tutorials.

At the moment, I have a raycast script running to hit enemies when shooting my handgun, and it also serves to pick up items with an Action Key (E)

However, even when I don't have the gun equip, they raycast deals damage to the enemy. Is there a way to disable it? Should I do this in the enemy script or raycast?

Please help. Thank you!

 var EnemyHealth : int = 25;
 
 function DeductPoints (DamageAmount : int) {
     EnemyHealth -= DamageAmount;
 }
     function Update () {
         if (EnemyHealth <= 0) {
             Destroy(gameObject);
         }
     }