Raycast Decals,Sound and MuzzleFlash not working too well

Ok so i have all my code but the decals dont show up and their is no sound or flash on shooting apart from when i don't hit anything (my level has no ceiling so i shoot upwards) the reload works fine but when i shoot at a wall not my crates (they have rigid bodies) then the timer for shooting gets ignored too... I really don't know why this wont work i have spent ages trying to get it working.

MY SHOOT SCRIPT (Pretty long yes, i know, awkward).

 var Damage : int = 20;
 var Range : float = 1000;
 var Force : float = 500;
 var Clips : int = 2;
 var BulletsPerClip : int = 12;
 var ReloadTime : float = 2;
 var BulletsLeft : int = 0;
 var ShootTimer : float = 0;
 var ShootCooler : float = 0.6;
 public var ShootAudio : AudioClip;
 public var ReloadAudio : AudioClip;
 var Aiming: boolean = false;
 var Gun : GameObject;
 var HitParticles : ParticleEmitter;
 var MuzzleFlash : ParticleEmitter;
 var MuzzleCooler : float = 0.6;
 var MuzzleTimer : float;
 var Light1 : GameObject;
 var Light2 : GameObject;
 var Light3 : GameObject;
 var MuzzleSpeed : int = 200000;
 var Decals : GameObject;
 var DecalDis : float = 0.01;
 var hit = RaycastHit;
 
 
 function Start(){
 
     MuzzleFlash.emit = false;
     HitParticles.emit = false;
     BulletsLeft = BulletsPerClip;
     Gun.animation["Reload"].layer = 1;
     
     
 
 }
 
 
 function Update () {
 
     
     if (MuzzleTimer > 0){
         MuzzleTimer -= Time.deltaTime;
         MuzzleFlashShow();
     }
     
     if(MuzzleTimer < 0){
         MuzzleTimer = 0;
     }
     
     if (ShootTimer > 0){
         ShootTimer -= Time.deltaTime;
     }
     
     if(ShootTimer < 0){
         ShootTimer = 0;
     }
         
     if(Input.GetMouseButtonDown(0) && BulletsLeft)
     {
         if(ShootTimer ==0){
             RayShoot();
             PlayShootAudio();
             ShootTimer = ShootCooler;
         }
         
         if(MuzzleTimer ==0){
             MuzzleTimer = MuzzleCooler;
             MuzzleFlashShow();
          }
     }
 
     
     if (Input.GetMouseButtonUp(1))
     {
         Aiming = false;
     }
     
         
         if (Input.GetMouseButtonDown(1))
     {
         Aiming = true;
     }
     
 
 }
 
 function RayShoot () {
     //check aim
     if(Aiming == true){
         Gun.animation.Play("ShootingAiming");
     }
     //check aim
     else if(Aiming == false){
     
         Gun.animation.Play("ShootingIdle");
     }
     //take bullet
     BulletsLeft --;
     
     //check bulletleft
     if(BulletsLeft <0){
         BulletsLeft = 0;
     }
     
     //check bulletleft
     if(BulletsLeft == 0){
         Reload();
     }
     
     var Hit : RaycastHit;
     var DirectionRay : Vector3 = transform.TransformDirection(Vector3.forward);
     
     //debug
     Debug.DrawRay(transform.position, DirectionRay * Range, Color.blue);
     
     //if contact
     if(Physics.Raycast(transform.position , DirectionRay , Hit , Range)){
         
         //if it's rigidbody
         if(Hit.rigidbody) {
                 
                 //particle effects
                 HitParticles.transform.position = Hit.point;
                 HitParticles.transform.localRotation = Quaternion.FromToRotation(Vector3.forward, Hit.normal);
                 HitParticles.Emit();    
                 
                 //force and dmg
                 Hit.rigidbody.AddForceAtPosition(DirectionRay * Force, Hit.point);
                 Hit.collider.SendMessageUpwards("ApplyDamage", Damage, SendMessageOptions.DontRequireReceiver);
         }
     
         
         if(Hit.collider){
             //spawn decal
             Instantiate(Decals, Hit.point +(Hit.normal * DecalDis),hit.Rotation);
         
             //particle effects
             HitParticles.transform.position = Hit.point;
             HitParticles.transform.localRotation = Quaternion.FromToRotation(Vector3.forward, Hit.normal);
             HitParticles.Emit();    
         }
 
 }
 }
 
 
 function Reload() {
     PlayReloadAudio();
     Gun.animation.CrossFade("Reload", 0.4);
     yield WaitForSeconds(ReloadTime);
     if(Clips > 0){
     
         BulletsLeft = BulletsPerClip;
     }
 }
 
 function PlayShootAudio(){
     audio.PlayOneShot(ShootAudio);
 }
 
 function PlayReloadAudio(){
     audio.PlayOneShot(ReloadAudio);
 }
 
 function MuzzleFlashShow(){
     if(MuzzleTimer > 0){
         MuzzleFlash.emit = false;
         Light1.active = false;
         Light2.active = false;
         Light3.active = false;
     }
 
     if(MuzzleTimer == MuzzleCooler){
         MuzzleFlash.transform.localRotation = Quaternion.AngleAxis(Random.value * 360 * MuzzleSpeed, Vector3.forward);
         
         MuzzleFlash.emit = true;
         Light1.active = true;
         Light2.active = true;
         Light3.active = true;
     }
     
     
 
 }