Using recoil on a Gun?

Today I want to know, how would I go about recoil on a gun? My gun is a child of a weapons object, that's a child of the camera. Here's my shooting code:

 var bloodPrefab: GameObject; // drag the blood prefab here, if any
 var sparksPrefab: GameObject; // drag the sparks prefab here, if any
 var muzzleFlash : GameObject;
 var gun : Transform;
 var target : Transform;
 var MaxBullets = 9;
 var Bullets = 9;
 var Clip = 10;
 var TPB = 0.1;
 
 function Update(){
     if (Input.GetButtonDown("Fire1")){
        if (Bullets > 0){
           if (Clip > 0){
              Shoot();
              Bullets -= 1;
              
           }
         }
     }
     
     if (Bullets == 0){
        if (Clip >= 1){
              Clip -= 1;
              Bullets = MaxBullets;
        }
        if (Clip == 0){
           Bullets = 0;
        }
     }
     OnGUI();
 }
 
 function Shoot(){
     if (shotSound) audio.PlayOneShot(shotSound); // play the shot sound
     var hit: RaycastHit;
     MuzzleFlashOn();
     if (Physics.Raycast(transform.position, transform.forward, hit)){
         // prepare rotation to instantiate blood or sparks
         var rot = Quaternion.FromToRotation(Vector3.up, hit.normal);
         if (hit.transform.tag == "Enemy"){ // if enemy hit...
             if (bloodPrefab) Instantiate(bloodPrefab, hit.point, rot); // make it bleed...
             hit.transform.SendMessage("ApplyDamage", 5, SendMessageOptions.DontRequireReceiver); // and consume its health
         } else { // otherwise emit sparks at the hit point
             if (sparksPrefab) Instantiate(sparksPrefab, hit.point, rot);
         }
     }
   Recoil();
 }
 
 function MuzzleFlashOn()
 {
     var muzzleFlashLength = 0.1;
     muzzleFlash.active = true;
     yield WaitForSeconds(muzzleFlashLength);
     muzzleFlash.active = false;
 }

 function Recoil(){
     //Camera.main.transform.rotation.z = 10;
     Camera.main.transform.localEulerAngles = new Vector3(0, 0, 30);
     print("Recoil!");
 }
 
 
 function OnGUI () {
     GUI.Box (Rect(100,0,100,50), "Bullets:" + " " + Bullets);
     GUI.Box (Rect (0,0,100,50), "Clip:" + " " + Clip);
     //GUI.Box (Rect (100,0,100,50), "Clip:" + " " + Clip);
 }

I have tried a few code samples but they didn't seem to work.