I'm glad they did it. I see the benefits of it in that they reduce noise pollution to the surrounding area. I myself cannot afford to buy suppressors, pay the fee to the feds, ect.
Also I would not benefit from using one as they do no good shooting hogs or other herd animals. They rest still spook after the first shot, and even if they made guns completely silent, which they don't, the slap made by the bullet hitting an adjacent hog spooks the whole herd.
I've looked at some sites that sell them and it seems that their diameter would interfere with sight picture of both iron sites and scopes, requiring then to be raised.
Like I said, I'm happy it passed but they are of no use to me.