Gun stretches and moves around to much in FPS

Hello, Im having trouble with my FPS. I have attahced my gun the the camera which is attached to the Controller. However, when this is done, the gun doesn't move at the same speed as the camera, it goes off and stretches when I look up or down. Ive written my own player movement code. Any ideas? Please be detailed, i am new to this and there are no answers when this question has been asked before. Here are two examples

Here is my own player movement code attached to the Player controller. I have not used any drag and drop movements or scripts for this.

 //VARIABLES FOR SOUND
 public AudioClip jump;
 public AudioClip collision;
 public AudioSource playerSpeaker;



 //VARIABLES AND JUNK!
 private float mouseSpeed = 5.0f;
 private float verticalRot = 0;
 private float upAndDown = 60.0f;
 private float haulAssSpeed = 10.0f;
 private float verticalSpeed = 0f;
 private float earthGravy = 5.0f;
 private float initialJumpVelocity = 20.0f;

 //BOOLS 
 private bool jumping = true;
 static bool gameOn = true;



 // Use this for initialization
 void Start () {
 
 }
 
 // Update is called once per frame
 void Update ()
 {
     if (gameOn == true)
     {
         CharacterController player1 = GetComponent<CharacterController>();

         //look left and right 
         float rotationLR = Input.GetAxis("Mouse X") * mouseSpeed;
         transform.Rotate(0, rotationLR, 0);


         //Look  up and down 
         verticalRot -= Input.GetAxis("Mouse Y") * mouseSpeed;
         float desiredUpDown = verticalRot;

         //stop from spining around by looking up and down
         desiredUpDown = Mathf.Clamp(desiredUpDown, -upAndDown, upAndDown);
         Camera.main.transform.localRotation = Quaternion.Euler(desiredUpDown, 0, 0);

         //Forward and side movements
         float fwdSpeed = Input.GetAxis("Vertical") * haulAssSpeed;
         float sideSpeed = Input.GetAxis("Horizontal") * haulAssSpeed;

         //Earths Gravy
         verticalSpeed += Physics.gravity.y * Time.deltaTime * earthGravy;

         //jumping

         if (Input.GetButtonDown("Jump") && player1.isGrounded)

         {
             verticalSpeed = initialJumpVelocity;
         }

         //Create a vector, each of the three speeds, move our character by that vector!
         Vector3 speed = new Vector3(sideSpeed, verticalSpeed, fwdSpeed);
         speed = transform.rotation * speed;

         //avoid glicthy play
         player1.Move(speed * Time.deltaTime);

     }
 
 }
 public static void playGameNow()
 {
     gameOn = true;
 }

 public static void stopGameNow()
 {
     gameOn = false;
 }

}

If you have done this correctly, what did you do? is it settings with controller or the camera? Any help greatly appreciated.

Thanks Again!