How to Sync bullet spawn with shoot animation

Hi, I have a question, how do I make the shoot animation sync with bullet spawn? right now when I'm clicking the fire button, it automatically fires the bullet but the animation is delayed by i think 0.2 secs. what I wanted to do is when I click the fire button, It will shoot the bullet exactly when my player raises his gun. Thanks in advance I really appreciate it.

here's my code that is attached to the CharacterController:

  CharacterController controller;

     public Animator animator;
 
     // Use this for initialization
     void Start () {
        
         controller = GetComponent<CharacterController>();
         if (!controller)
      }
 
 // Update is called once per frame
     void Update () 
         {
                   if (Input.GetButtonDown ("Fire1")) 
             {
                 if (weapon) 
             {
                 animator.SetTrigger ("Shoot");
                 weapon.GetComponent<WeaponShooter> ().Shoot ();
 
             }
     }
 }

And This One is my WeaponShooter Code:

 using UnityEngine;
 using System.Collections;
 
 public class WeaponShooter : MonoBehaviour {
 
     public Rigidbody projectile;
     public int ammo;
     public Transform spawnPoint;
     public int projectileForce;
 
     // Use this for initialization
     void Start () {
 
         if (ammo <= 0) 
         {
             ammo = 20;
         }
 
         if (projectileForce <= 0) 
         {
             projectileForce = 3;
         }
     
     }
 
 
 
     public void Shoot()
     {
         if (ammo > 0) 
         {
             Rigidbody rb = Instantiate (projectile, spawnPoint.position, spawnPoint.rotation) as Rigidbody;
 
             rb.AddRelativeForce (Vector3.forward * projectileForce, ForceMode.Impulse);
 
             ammo--;
         } 
         else 
         {
             Debug.Log ("Reload");
         }
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }