IndexOutOfRangeException: Index was outside the bounds of the Array

I'm still relatively new to unity, I'm trying to create a script to handle weapon information (like ammunition, damage, name etc) and handle weapon switching. My script is giving me the above error but not providing a line so I don't know where it is occuring

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class weaponManager : MonoBehaviour
 {
     public GameObject weaponHolder;
     public Transform[] weaponHolderChildren = new Transform[9];
     public List<GameObject> weaponObjects = new List<GameObject>(9);
     public List<weaponClass> weapons = new List<weaponClass>(9);
     public GameObject testObject;
     int currentWeapon;
     
     void Start()
     {
         weaponHolderChildren = GetComponentsInChildren<Transform>();
         for (int i = 0; i < weaponObjects.Count; i++)
         {
             weaponObjects.Add(weaponHolderChildren[i].gameObject);
         }
         int currentIndex = 0;
         foreach (GameObject weaponGameObject in weaponObjects){
             weapons[currentIndex].weaponObject = weaponGameObject;
             weapons[currentIndex].weaponName = weaponGameObject.GetComponent<weaponStats>().weaponName;
             weapons[currentIndex].damage = weaponGameObject.GetComponent<weaponStats>().damage;
             weapons[currentIndex].maxAmmo = weaponGameObject.GetComponent<weaponStats>().maxAmmo;
             weapons[currentIndex].ammoPickupSize = weaponGameObject.GetComponent<weaponStats>().ammoPickupSize;
             weapons[currentIndex].ammoPickupName = weaponGameObject.GetComponent<weaponStats>().ammoPickupName;
             currentIndex++;
         }
         currentWeapon = 0;
         setActiveWeapon(currentWeapon);
     }
     void Update()
     {
     }
     public void testForWeaponInput()
     {
     }
     public void setActiveWeapon(int passedWeapon)
     {
         int currentIndex = 0;
             foreach (weaponClass weapon in weapons)
             {
                 if (currentIndex == passedWeapon)
                 {
                     weapon.weaponObject.SetActive(true);
                 }
                 else
                 {
                     weapon.weaponObject.SetActive(false);
                 }
             }
     }
 }