Well non-metallic compounds only fool MAD scanners. Your all-ceramic gun is still picked out by a "cyberware" scanner. Millimeter Wave scanners (SR5 pg 362) aka "cyberware scanners" pick out more than just cyberware. Still, I'm pretty sure looking at those rules it doesn't pick out component parts of cyberware... just a binary "cyberware" detection with no granularity on what's IN your cyberlimbs... 1 hit reveals presence and location. Additional hits revals information "such as" function, model, type. I suppose "capacity-using modular enhancements" is or is not appropriate to information "such as" function, model, and type... depending on table variation.
Still, lots of good food for thought. Thanks a lot for the input... I'll be incorporating some suggested tweaks for sure.