So I have quite a collection of 90s Mags most new in packet. 2D-6D, a few C, and the Solitaire and Minis. It seems some mods don't work with the older lights and as you go farther back everything seems to be made to different standards with the pipe being bigger and switches not fitting. I'd hate to be spending a lot if I can barely use the lights. Even getting old bulbs is harder and more expensive than say 10 months ago.