when i export it doesn't render the particles

@Ballistic Blocker I could, but i personally think it would be better to have a consistent flash for stuff like posters. What you can do is instance the particle and delete 'flash' under children, then you dont get the flash and just get the sparks and smoke

A good thing to add would be having sections of the muzzle flash get cut off. Muzzle flashes happen so fast that only incredibly advanced cameras can occasionally catch the full flash while most normal cameras only catch part of the shot and sometimes miss it completely.
Just a little advice for realism.