Anyone got a machine shop that could produce a limited run of parts?

[systema PTW SOPMOD]

Hi all,
Once again I need your help fellow forum members!!
I'm after a few parts for GPMG builds that just don't seem to be available
Anyhoo, I've decided that it would be a good idea to just have them made myself.
I need a flashider, replica gas regulator, IWS bracket and a couple of other parts and I have a few ideas about how they could be made with a bit less headache. However, I don't know anyone with the facilities required to produce these parts. :'(
If you know anyone then please let me know