remove health from 1 gameobject at a time

Hello,

i have made a health script that reduces the health when the object gets hit by a raycast. The script works for 1 gameibject per scene, but i want to be able to use it for multiple gameobjects (targets, enemies etc).

These are the scripts i have:

The raycastgun:

 using UnityEngine;
 using System.Collections;
 
 public class GunHit
 {
     public float damage;
     public RaycastHit raycastHit;
 }
 
 public class RaycastGun : MonoBehaviour 
     {
     public float fireDelay = 0.1f;
     public float damage;
     public string buttonName = "Fire1";
     public LayerMask layerMask = -1;
 
 
     private bool readyToFire = true;
 
 
 
     // Use this for initialization
     void Start () {
     }
     
     // Update is called once per frame
     void Update () 
     {
         if (Input.GetButtonDown (buttonName) && readyToFire) 
         {
             RaycastHit hit;
             if (Physics.Raycast (transform.position, transform.forward,out hit, Mathf.Infinity,layerMask))
             {
                 //Health verlagen wanneer 
                 Health.currentHealth = Health.currentHealth - damage;
                 Debug.Log (Health.currentHealth);
             }
         }
     }
 }

and the health:

 using UnityEngine;
 using System.Collections;
 
 public class Health : MonoBehaviour {
 
     public float maxHealth = 100.0f;
     static public float currentHealth = 100.0f;
 
     // Use this for initialization
     void Start () 
     {
         currentHealth = maxHealth;    
     }
 
     void Update ()
     {
         if (currentHealth <= 0) 
         {
             gameObject.SetActive(false);
         }
     }
 }

thanks,