[stash247]

While I'll not fund your legal bills, please consider: since no atf4473 form is required, to purchase a paint ball gun, or air rifle, the item is, by their definition, 'not a gun'.
All of the body of federal law which I have read, concerns itself with things that 'are a gun', particularly, in title two arms.
My humble opinion is, that since BATF has no jurisdiction in things 'not a gun', whatever I do with an air rifle, or, a non powder powered paintball gun, is well beyond their authority to challenge!
Do I want to spend my life savings, challenging this point of law? NO
Charged, with such an offense, Bullshit in Nature, would I? Hell, Yes.
I can muffle a car, an air compressor, or a lawn mower, and in many communities, would be brought to answer, should I not choose to do so, which is all well and good, I suppose, if I lived in such a communnity.
An air rifle, in some communities, is bound by ordinances, in its use, likening it to a firearm, which uses fixed ammunition, but this does not make it one. Neither is a Bow, for shooting arrows, a firearm, in the Federal sense, but, often, subject to the same kind of local ordinances, in control of it's use.
Federal law defines a firearm as a device capable of projecting a bullet, by the use of chemical reaction, ie, combustion, and using fixed ammunition( primer, powder, bullet in one unit), and speaks nothing of pneumatics, ie air rifles, pistols, etc.
My point is, since an air rifle is not a "gun", under Federal law, the points of law described, and taxed, under the 1934 Firearms Act, concerning automatic weapons, supressors,etc, simply do not apply here!