Inheritance with Guns

I am making a shooter game, and have, currently, two classes: "RangedWeapon" and "Pistol." The code for each is:

 public  class RangedWeapon : MonoBehaviour {
     public GameObject bulletPrefab;
     public Transform bulletSpawn;
     
     public void Fire()
     {
         Shoot();
     }
     
     private void Shoot()
     {
     // Create the Bullet from the Bullet Prefab
     var bullet = (GameObject)Instantiate (
         bulletPrefab,
         bulletSpawn.position,
         bulletSpawn.rotation);
 
     // Add velocity to the bullet
     bullet.GetComponent<Rigidbody>().velocity = bullet.transform.forward * 6;
 
     // Destroy the bullet after 2 seconds
     Destroy(bullet, 2.0f);
     }
 }
 

and

 public class Pistol : RangedWeapon {
     
 }

My idea is to override shoot to add features such as reload time and ammunition count. Both classes are WIP. But my main problem is that I can't assign the gun to a component. There used to be a "Gun" class, and it worked. But my several classes can't be assigned. Any help?