Why isn't my RPC shooting code working?

 using UnityEngine;
 using System.Collections;
 
 public class ShootingScripts : MonoBehaviour {
     public Rigidbody bullet;
     
     
     void Start () {
         if (!networkView.isMine){
             enabled = false;
         }
     }
     
     void Update() {
         
         if(Input.GetButtonDown("Fire1")){
                networkView.RPC ("SpawnProjectile", RPCMode.All, transform.position, transform.rotation, 0); 
         }    
     }
     [RPC]
     void SpawnProjectile(Vector3 position, Quaternion rotation)
     {
         Rigidbody clone;
         clone = Instantiate(bullet, position, rotation) as Rigidbody;
         clone.AddForce(transform.right * 900);
     }
 }

Does anyone have any idea why my bullets aren't firing when I press the fire key? I have the script attached to an empty game object which is attached to the barrel of the gun. I'm not getting any error messages, it's just not shooting.