Sound Doesn't trigger when firing projectile

I created a laser sound I want to trigger when a projectile is fired. The projectile launches fine and there is no error when I play the scene but i still cannot hear the sound.

using System.Collections; using UnityEngine;

public class ThrowObject : MonoBehaviour {

 public GameObject projectile;
 public AudioClip shootSound; 

 private float throwSpeed = 2000f;
 private AudioSource source;
 private float volLowRange = 0.5f;
 private float volHighRange = 1.0f;

 // Use this for initialization
 void Awake () {
     source = GetComponent<AudioSource>();
     
 }
 
 // Update is called once per frame
 void Update () {
     if (Input.GetButtonDown("Fire1"))
     {
         source.PlayOneShot(shootSound, 1F);
         GameObject throwThis = Instantiate (projectile, transform.position, transform.rotation) as GameObject;
         throwThis.GetComponent<Rigidbody>().AddRelativeForce (new Vector3 (0, 0, throwSpeed));
 }

} }

For reference I am following this tutorial (https://www.youtube.com/watch?time_continue=1259&v=5N-428vKwaE) and I am stuck at the 20:48 minute mark. Even after tweaking in the Inspector my sound still does not play.