How to attach shooting gun to my eyes???(HTC vive) When I press the button on the controller, it should fire from my eyes. But I can't find the way!! please help me what to do!! Best regards,

using UnityEngine;
using VRTK;

public class Gun : VRTK_InteractableObject
{
private GameObject bullet;
private float bulletSpeed = 1000f;
private float bulletLife = 5f;

public override void StartUsing(GameObject usingObject)
{
    base.StartUsing(usingObject);
    FireBullet();
}

protected override void Start()
{
    base.Start();
    bullet = transform.Find("Bullet").gameObject;
    bullet.SetActive(false);
}

private void FireBullet()
{
    GameObject bulletClone = Instantiate(bullet, bullet.transform.position, bullet.transform.rotation) as GameObject;
    bulletClone.SetActive(true);
    Rigidbody rb = bulletClone.GetComponent<Rigidbody>();
    rb.AddForce(-bullet.transform.forward * bulletSpeed);
    Destroy(bulletClone, bulletLife);
}

}

I appreciate your support!! Thank you!