Yes, they ring for a reason.
If you dont like it, run a strand of safety wire around the end in the groove. That'll stop it. Of course, I doubt it'll work as well ...( no I wont post the pics)
Take it out and fire it at night with and without the wire and see for youself.
* on a side note, if you aren't careful when you use heat to attach one, you can alter the H.T of the flashhider causing failures that otherwise wouldn't occur