Character Switch, help

Hi guys I recently started a new project with the aim to learn some new things I relatively new so I don't know a lot about C sharp. I created a script from the help of a video to create a button that should change what character is active. but because these characters have a gun system involved every time I go to click the button on the UI it shoots instead, Is there a way around this? any help would be much appreciated guys, screenshots and code will be below!

-code-
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Seletion : MonoBehaviour
{
public GameObject Handgun_01_FPSController, Assault_Rifle_01_FPSController;

int whichAvatarIsOn = 1;

private void Start()
{
Handgun_01_FPSController.gameObject.SetActive(true);
Assault_Rifle_01_FPSController.gameObject.SetActive(false);
}

public void SwitchAvatar()
{
switch (whichAvatarIsOn)
{
case 1:

whichAvatarIsOn = 2;

Handgun_01_FPSController.gameObject.SetActive(false);
Assault_Rifle_01_FPSController.gameObject.SetActive(true);
break;

case 2:

whichAvatarIsOn = 1;
Handgun_01_FPSController.gameObject.SetActive(true);
Assault_Rifle_01_FPSController.gameObject.SetActive(false);
break;
}
}
}
Game Screenshot
https://pasteboard.co/JeZcx00.png
Hierarchy
https://pasteboard.co/JeZcSYs.png