Particle effect upon firing

I would like my particle effect to fire once when I shoot and that's it. I think I got the code setup so that it ques when firing alright however the particles keep playing. I turned off looping and play on awake. Not sure what's causing it if it's in my code or the particle system. In this script I also have an impact effect with a fire rate set at .50f. Does the fire rate also effect how often the particle effect will go? I'm trying to get it so that when I "Fire" the dust comes out of the gun and the impact effect hits the wall instantly. .50 later I can fire again.



Thank you!!

Code (CSharp):

1. using UnityEngine;
2.  
3. public class Gun : MonoBehaviour
4. {
5.  
6.     public float damage = 10f;                  //Damage
7.     public float range = 500f;                  //Range of bullet
8.     public float fireRate = .50f;               //Greater fire rate = less time between shots.
9.     public float impactForce = 30f;             //Impact (velocity)
10.     public ParticleSystem Muzzle;
11.     public Camera fpsCam;                       //Camera. Click and drag off of hierarchy
12.     public GameObject impactEffect;             //Prefab system for impact
13.  
14.     private float nextTimeToFire = 0f;          //Instant shot (no lag when pressing down)
15.  
16.     void Update()
17.     {
18.  
19.         if (Input.GetButtonDown("Fire1") && Time.time >= nextTimeToFire)
20.         {
21.             nextTimeToFire = Time.time + 1f / fireRate;
22.             Shoot();
23.  
24.         }
25.  
26.     }
27.  
28.     void Shoot()
29.     {
30.  
31.         Muzzle.Play();                      //Play muzzle / barrel
32.  
33.         RaycastHit hit;
34.         if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
35.  
36.         {
37.          
38.             Target target = hit.transform.GetComponent<Target>();
39.             if (target != null)
40.             {
41.                 target.TakeDamage(damage);
42.             }
43.  
44.             if (hit.rigidbody != null)             //Hit rigidbody component
45.             {
46.                 hit.rigidbody.AddForce(-hit.normal * impactForce);
47.             }
48.  
49.             GameObject impactGO = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
50.             Destroy(impactGO, .25f);  // Destroy impact effect
51.             {
52.              
53.             }
54.  
55.         }
56.     }
57. }

 

Try to destroy the impact in individual script and attach to the particle system prefab.