FX Impact with Huggett Moderator

maoboss, thank you so much for this; you have been of immense help :)!

Just to be clear, what you are showing is the .30 cal. Impact with the Huggett Magna (1/2" UNF female thread) and an adapter [1/2" UNF male thread to 20 mm (M20X1 pitch)female thread] to attach to the fixed shroud, right?

Here is a link that is spot on. (I don't know if the Bobcat link is identical specs.):
http://pcptunes.com/fx-impact-shrouded-barrel-adapter-to-unf-thread.html
 
Yes exactly. Fx impact fixed shroud + the pcptunes adaptator + an 1/2 UNF silencer like the Huggett Magna.
Here is a video with different test. There is no much difference in the video but trust me, the hugged Magna is the more quiet.
My impact is a .30 cal, 250 bar full charged tank, regulator on 150 bar, power max, valve max. 
The evanix rex is a .357 cal with 200 bar fully charged tank.

http://fr.tinypic.com/m/jja8pf/3View

Regards