not losing ammo when shooting

i have a script that shots raycasts, and there's a function that reloads (3 seconds) and after those 3 seconds are up, the player has unlimited ammo for a short amount of time. The currentAmmo variable was not changing. I need to fix this.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class M4A1Gun : MonoBehaviour {
 
     public GameObject weepons;
 
     public Camera fpsCam;
     public ParticleSystem muzzleFlash;
     public GameObject impactEffect;
     public GameObject bloodHit;
     public Animator anim;
 
     public AudioSource shot;
     public AudioSource reloadSound;
 
     public float range = 100f;
     public float damage = 10f;
     public float fireRate = 15f;
 
     public int maxAmmo = 30;
     public int currentAmmo;
     public float reloadTime = 3f;
     private bool isReloading = false;
 
     private float nextTimeToFire = 0f;
     private float nextTimeToReload = 0f;
 
     // Use this for initialization
     void Start ()
     {
         currentAmmo = maxAmmo;
     }
     
     // Update is called once per frame
     void Update ()
     {
         if (weepons.GetComponent<Weapons>().selectedWeaopon == 0f)
         {
             Gun();
         }
 
         if (isReloading == true && Time.time >= nextTimeToReload)
         {
             nextTimeToReload = Time.time + 15f / reloadTime;
             ReloadSound();
         }
     }
 
 
     IEnumerator Reload ()
     {
         isReloading = true;
         Debug.Log("Reloading");
         anim.SetBool("reloading", true);
         this.GetComponent<M4A1anim>().shooting = false;
 
         yield return new WaitForSeconds(reloadTime);
         
         
 
         currentAmmo = maxAmmo;
         isReloading = false;
         anim.SetBool("reloading", false);
         
         
         
     }
 
     void ReloadSound()
     {
         reloadSound.Play();
     }
 
 
 
 
 
     void Gun()
     {
 
         if (currentAmmo <= 0)
         {
             StartCoroutine(Reload());
             return;
         }
 
         if (isReloading)
             return;
 
         if (Input.GetButton("Fire1") && Time.time >= nextTimeToFire)
         {
             nextTimeToFire = Time.time + 1f / fireRate;
             Shoot();
         }
 
         if (Input.GetButtonUp("Fire1"))
         {
             this.GetComponent<M4A1anim>().shooting = false;
         }
 
         if (Input.GetButtonDown("Fire1"))
         {
             this.GetComponent<M4A1anim>().shooting = true;
         }
     }
 
     void Shoot ()
     {
         muzzleFlash.Play();
         shot.Play();
         currentAmmo--;
 
         RaycastHit hit;
         if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
         {
             Debug.Log(hit.transform.name);
 
             WeebTarget target = hit.transform.GetComponent<WeebTarget>();
             if (target != null)
             {
                 target.TakeDamage(damage);
             }
 
             GameObject impactGO = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
             Destroy(impactGO, 2f);
 
             if (hit.rigidbody != null)
             {
                 GameObject bloodGO = Instantiate(bloodHit, hit.point, Quaternion.LookRotation(hit.normal));
                 Destroy(bloodGO, 2f);
             }
         }
     }
 }