audio problems with my trigger script, help please

i have an annoying problem with a script that i have made, my audio clip of a minigun is 2 seconds long and my script is only playing one and a half gunshot before starting the sound again. i have been playing around for hours now and i cannot figure out the problem. so i have posted my 'original unmangled' script to get help with my problem

that would be awesome, thanks

 var Rocket_fireRate : float = 0.5;
 var fireRate : float = 0.01;
 private var nextFire : float = 0.0;
 var rocket : GameObject;
 var projectile : GameObject;
 var MachineGun_sound: AudioClip;
 
 function Start (){
     audio.clip = MachineGun_sound;
 }
 
 function Update () {
     if (Input.GetButton ("Fire1")){
         audio.Play();
     if (Time.time > nextFire) {
         nextFire = Time.time + fireRate;
         var prijectile : GameObject = 
         Instantiate(projectile, transform.position, transform.rotation) as GameObject;
     }
     }
        else{;audio.Stop();}
     
     if (Input.GetButton ("Fire2") && Time.time > nextFire) {
         nextFire = Time.time + Rocket_fireRate;
         var rocket : GameObject = 
         Instantiate(rocket, transform.position, transform.rotation) as GameObject;
     }
 }