Jon, you need a joint called FIRESPOT placed at the end of the muzzle - FPSC uses this as the attachment point for the muzzleflash decal and the flash of yellow light. There are two other 'marker' joints, BRASS and SMOKE, which tell the engine where to emit spent cases, and... well, smoke  (BTW, from messing around with HUD models it seems that you automatically get a smoke effect wherever you put the BRASS joint - but neither brass or smoke are applicable to a plasma rifle, so no worries  )

Cool weapon! 

Cheers

- Graham
