PlayerWeaponController

using UnityEngine;
using UnityEngine.UI;

public class PlayerWeaponController : MonoBehaviour {
    public GameObject weapon;           // Public reference to the weapon
    public Image UIcrosshair;           // Reference to the UI component
    public Sprite weaponCrosshair;      // Reference to the specific weapon crosshair

    public void EquipWeapon() {
        UIcrosshair.sprite = weaponCrosshair;
        weapon.SetActive(true); // Activate the weapon gameobject
    }
}