public static Transform Spawn(Vector3 position, Quaternion rotation)
{
GameObject ammo = ammoManagerSingleton.ammoPool.Dequeue();
ammo.transform.position = position;
ammo.transform.localRotation = rotation;
ammo.SetActive(true);
ammoManagerSingleton.ammoPool.Enqueue(ammo);
ammoManagerSingleton.GetComponent <AudioSource>().Play();
return(ammo.transform);
}