Weapon Select Menu

i want to make a weapon select screen in another scene (not in the main one beacause i dont want the players to change all weapons in game) here is the script for the weapon select screen(very simplified ) using UnityEngine; using System.Collections;

 public class WeaponSelectScreen : MonoBehaviour {
 
     public string MainMenu;
 
     public GameObject playerGunsCanvas;    //a empty game object as a child of a main canvas where you see the weapons that you chose
     public GameObject weaponTypeSelectCanvas; //a empty game object as a child of a main canvas where you select the weapon type (primary, secondary)
     public GameObject primaryWeaponsCanvas;    //a empty game object as a child of a main canvas where you select the primary weapon type (assault rifle, smg, lmg...)
     public GameObject assaultRiflesCanvas;    //a empty game object as a child of a main canvas where you select the assault rifle (assault rifle 1 ,assault rifle 2...)
     public GameObject assaultRiffle1Canvas;    //a empty game object as a child of a main canvas where you select the assault rifle1 atatchments (atatchment 1 ,atatchment 2...)
     public GameObject assaultRiffle2Canvas;    //a empty game object as a child of a main canvas where you select the assault rifle atatchments (atatchments 1 ,atatchment 2...)
     
 
     public GameObject assaultRiffle1Prefab;    
     public GameObject assaultRiffle2Prefab;
     public GameObject atatchment1Prefab;
     public GameObject atatchment2Prefab;
     public GameObject atatchment3Prefab;
 
     
     public void PrimaryWeaponMenu(){ //when the Primary Weapon button is pressed in the weaponTypeSelectCanvas
         primaryWeaponsCanvas.SetActive(true);
         assaultRiflesCanvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         weaponTypeSelectCanvas.SetActive(false);
         playerGunsCanvas.SetActive(false);
     }
     public void AssaultRifleMenu(){    //when the AssaultRifle button is pressed in the primaryWeaponsCanvas
         primaryWeaponsCanvas.SetActive(false);
         assaultRiflesCanvas.SetActive(true);
         assaultRiffle1Canvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         weaponTypeSelectCanvas.SetActive(false);
         playerGunsCanvas.SetActive(false);
     }
     public void AssaultRifle1Menu(){//when the AssaultRifle1 button is pressed in the assaultRiflesCanvas
         primaryWeaponsCanvas.SetActive(false);
         assaultRiflesCanvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(true);
         assaultRiffle1Canvas.SetActive(false);
         weaponTypeSelectCanvas.SetActive(false);
         playerGunsCanvas.SetActive(false);
     }
     public void AssaultRifle2Menu(){//when the AssaultRifle2 button is pressed in the assaultRifflesCanvas
         primaryWeaponsCanvas.SetActive(false);
         assaultRiflesCanvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(true);
         weaponTypeSelectCanvas.SetActive(false);
     }
     public void ChangeLoadout(){//when the Change Loadout button is pressed in the playerGunsCanvas
         primaryWeaponsCanvas.SetActive(false);
         assaultRiflesCanvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         weaponTypeSelectCanvas.SetActive(true);
         playerGunsCanvas.SetActive(false);
 
     }
     public void SaveMenu(){//when the Accept button is pressed in the assaultRiffle1Canvas or assaultRiffle1Canvas
         primaryWeaponsCanvas.SetActive(false);
         assaultRiflesCanvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         assaultRiffle1Canvas.SetActive(false);
         weaponTypeSelectCanvas.SetActive(false);
         playerGunsCanvas.SetActive(true);
         
     }
 
     public void BackToMainMenu(){//when the Cancel button is pressed in any menu
         Application.LoadLevel(MainMenu);
     }
 
 
 }
 

and this is the weapon switch script using UnityEngine; using System.Collections;

 public class NewWeaponSwitch : MonoBehaviour {
 
     public GameObject gun1;
     public GameObject gun2;
     public GameObject gun3;
     public GameObject gun4;
     // Use this for initialization
     public void Start () {
 //    gun1 = GameObject.FindGameObjectWithTag("")
 //    gun1 = GameObject.FindGameObjectWithTag("")
     }
     
     // Update is called once per frame
 public    void Update () {
         if (Input.GetButtonDown("SwitchWeapons")){
             switchWeapons();
         }
     }
     public    void switchWeapons(){
         if(gun1.activeSelf == true){
             gun2.gameObject.SetActive(true);
             gun1.gameObject.SetActive(false);
             //Debug.Log("weapon1 active");
         }
         else if(gun2.activeSelf == true){
             gun3.gameObject.SetActive(true);
             gun2.gameObject.SetActive(false);
         //    Debug.Log("weapon2 active");
         }
         else if(gun3.activeSelf == true){
             gun4.gameObject.SetActive(true);
             gun3.gameObject.SetActive(false);
             //    Debug.Log("weapon2 active");
         }
         else if(gun4.activeSelf == true){
             gun1.gameObject.SetActive(true);
             gun4.gameObject.SetActive(false);
             //    Debug.Log("weapon2 active");
         }
     }
 }
 

how can i make it so when you press the accept button the weapon gets set as gun1 in the level?