"Alan"What I have is from TKO22, and is affectionately called an LDC (lead dust collector). But... I am NOT PC!
There is enough stigma about using all sorts of terms, all of which, are euphemisms for a silencer. What we need to remember is, airguns, under Fed law, are NOT firearms!
Silencers, no matter which euphemism we use, are still the same device. They are, by any description, used to reduce, diminish, remove, lessen, muffle, quiet, decrease, decline, fade, ebb or dwindle, the muzzle report of a rifle. It makes little difference if the rifle (or pistol) is an airgun, or a firearm. Except of course, that the Fed does not recognize an airgun as a firearm. Thus, whether you wish to believe whatever the statute states, or what euphemism you wish to use, they are indeed legal on an airgun.
That said, that allowance for airguns could change. But using a euphemism, instead of what they really are, is NOT going to change the thinking of the Fed, should they decided to modify the law. And just for the record, doing so (changing the law) would require a 2/3 majority of congress, and that isn't about to change! Thanks to the NRA!
It USED to take congress and the presidents signature to change the law. Now all it takes is an executive order because congress will not fight.