How to solve weird rotation problem?

Hey, I'm just making a weapon switching script, I keep both my weapon as children of the main camera, but for some weird reason, as I walk or jump, the graphics inside the gun gameObject rotate and I can no longer see them. This does not happen when I switch off my script. To solve it right now I got a lateUpdate function placing their local rotation and position to 0, but would like to fix it the right way. Here is what I have of the script. P.S. I've also tried searching for a switching script on the web, but the same thing happens.

 var maxGuns : int = 4;
 var guns : GameObject[];
 @HideInInspector
 var playerMovementScript : PlayerMovement;
 var activeGun : int = 0;
 var player : Transform;
 
 
 
 function activateGun (gun : int){
 playerMovementScript.currentGun.GetComponent(GunScriptNoSD).beingHeld = false;
 playerMovementScript.currentGun.gameObject.SetActiveRecursively(false);
 guns[gun].SetActiveRecursively(true);
 guns[gun].GetComponent(GunScriptNoSD).beingHeld = true;
 playerMovementScript.currentGun = guns[gun];
 
 guns[gun].transform.localPosition = Vector3(0,0,0);
 
 }
 
 function Start () {
 playerMovementScript = GameObject.FindWithTag("Player").GetComponent(PlayerMovement);
 player = GameObject.FindWithTag("Player").transform;
 playerMovementScript.currentGun.GetComponent(GunScriptNoSD).beingHeld = false;
 for (var i = 0; i < guns.length; i++){
 print (guns[i].name);
 guns[i].SetActiveRecursively(false);
 guns[i].transform.localPosition = Vector3(0,0,0);
 
 }
 playerMovementScript.currentGun = guns[0];
 guns[0].SetActiveRecursively(true);
 guns[0].transform.localPosition = Vector3(0,0,0);
 guns[0].GetComponent(GunScriptNoSD).beingHeld = true;
 activeGun = 0;
 
 
 }
 
 function Update () {
 if (Input.GetButtonDown("Switch")){
 activeGun += 1;
 if (activeGun > guns.Length - 1){
 activeGun = 0;
 }
 activateGun (activeGun);
 }
 }