I mean the amount of particles needed for that cant be good for the performance.
I've overused particles before, and I can say from experience, the engine can handle 300-600 particles/gun, assuming the players weapon would be the most detailed, because its right infront of the screen. The other guns could be less detailed, depending on the distance to the player.
Even if you make the player's gun with 800 particles, and the others with less, IMHO the engine will handle that...
*EDIT* I ran your code with the m4a1 model from the resources, and I see some strange "lines" if I move backwards.
What are the 2 vertices for? Where are they located on your UZI model ?
