*The discussion of the creation, fabrication, or modification of airgun moderators is prohibited. The discussion of any "adapters" used to convert an airgun moderator to a firearm silencer will result in immediate termination of the account.*
I have one on my .25. Opted for quite a lot of chambers (5). And it's a very silent moderator. It really muffles the sounds. And it looks damn good while doing it.
I have a 5 chamber on my L2 9mm. My current tune is at 180 bar/115 fpe and it is quite. The pellet hitting the target is way more of a report than what the moderator allows to escape.