The mic conversion for civ radio is easy.
https://www.ar15.com/forums/t_6_10/4...fo.html&page=1
It literally only costs $10 for a chinese Panasonic 6mm mic off ebay and 15 minutes to remove the PCB.
But yeah, stock Sordin runs dynamic mics which will not work well with civ-radio PTTs. You either need to built an Engdahl amp into your PTT ($30 in parts) , convert your Sordin to a electret mic ($5-10 in parts), or pay $150-200 to companies like TCI or MSA for a amp-ed PTT for civillian radios.
The ebay $150 Sordins are rumoured to have poorer RF shielding though (read: interference).