I have a problem with particle system

I made a muzzle flash for rifle that have a light component which lights properly , i stored this muzzle flash as prefab , then i imported a pistol model and attached to it this particle system but what was wrong is that the lighting in the muzzle flash is not working for the pistol. Can you help figure the problem ? (there is no code for the particle system just effect.Play() in the gun script )