Will fit 18 stubby, stubby x-ray 18. 
Please note the fire button panel replaces both sets of panels on the stubby and directly fits over the chip.
please be careful when unscrewing and re screwing the panels..... do not overtighten! 
the panels will glow after receiving uv (sunlight) as with all glow in the dark particles, it will look white and logo pink in normal light.