chm silencer

[SHANE03EX]

Has anyone heard of a chm silencer for a 400ex? Are they any good? What kind of power would I get? I was thinking of buying one and the guy says its got a silencer, are they quiet enough that I wont get hasseld at an orv park?

Thanks for any feedback

[SHANE03EX]

I take it nobody has heard of or seen this silencer?