Swapping Weapons In Game

Hey guy

I have a few scripts that allow me to pickup weapons in my FPS game

weaponLockout.js is attached to the locked weapon as a child of the weapons changer.

 #pragma strict
 
 var isLocked : boolean = true;
 
 var weaponPickup : GameObject;
 var playerWeapons : GameObject;
 
 private var pickupTransform : Transform;
 
 function Start () {
  pickupTransform = weaponPickup.transform;
 }
 
 function Update () {
  if(weaponPickup.GetComponent(WPickup).pickedUp == true) {
  isLocked = false;
  }
  if(Input.GetButtonDown("Drop Weapon")) {
  isLocked = true;
  Drop();
  }
 
 }
 
 function Unlock () {
  isLocked = false;
 }
 
 function Drop () {
  playerWeapons.SendMessage("Select2");
  isLocked = true;
  yield WaitForSeconds(1);
  weaponPickup.gameObject.SetActiveRecursively(true);
  pickupTransform.position = playerWeapons.transform.position;
 }

WPickup.js is attached to the pickup and unlocks the locked weapon.

 #pragma strict
 
 var lock : weaponLockout;
 var playerWeapons : GameObject;
 
 var pickedUp : boolean = false;
 
 var whatToSelect : int = 4;
 
 function Start () {
  pickedUp = false;
 }
 function OnTriggerStay (col : Collider) {
  if(col.gameObject.tag == "Player_1") {
  if(Input.GetButtonDown("Pickup")) {
  pickedUp = true;
  if(whatToSelect == 1) {
  playerWeapons.SendMessage("Select1");
  }
  if(whatToSelect == 2) {
  playerWeapons.SendMessage("Select2");
  }
  if(whatToSelect == 3) {
  playerWeapons.SendMessage("Select3");
  }
  if(whatToSelect == 4) {
  playerWeapons.SendMessage("Select4");
  }
  lock.Unlock();
  gameObject.SetActiveRecursively(false);
  }
   }
 }

i can pickup up the weapons fine but i want to be able to swap one of the current weapons for one of the pickups

I am unsure how to do this

Please help

Thanks Dj