Modina Lim was convicted of knowingly and unlawfully possessing an unregistered sawed-off shotgun in violation of 26 U.S.C. § 5861(d). Lim appeals the district court’s rejection of his constitutional challenges to this statute. We affirm.
I.
On September 13, 2004, Lim brought an unregistered 12 gauge, single-shot, sawed-off shotgun into a Madison, Wisconsin gun shoр for repair. The store notified police, who then confronted Lim. The shotgun was a Brazilian manufactured E.R. Amantino shotgun with a barrel that had been shortened to a length of 14]é inches; the overall length of the shotgun was 24 inches.
The National Firearms Act, 26 U.S.C. § 5801, et seq. (the “Act”), establishes a statutory framework to ensure that manufacturers, importers, and dealers of firearms pay a tax upon and properly register all firearms prior to transfer. Section 5845(a)(2) defines the term “firearm” to include, as relevant here, “a weapon made from a shotgun if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 18 inches in length.” Section 5811 requires the transferor to pay a tax on each firearm transferred. Section 5841(b) additionally requires that each transferred firearm be registered to the transferee by the transferor in the National Firearms Rеgistration and Transfer Record (the “Firearms Record”). And section 5861(d) prohibits any individual from “receiv[ing] or possessing] a firearm which is not registered to him in the [Firearms Record].”
A grand jury in the Western District of Wisconsin charged Lim in a single-count indictment with possession of a firearm, made from a shotgun, with an overall length of less than 26 inches and a barrel length of less than 18 inches, which was not registered to him in the Firearms Record in violation of section 5861(d). Lim filed a motion to dismiss the indictment which asserted that section 5861(d) is unconstitutional because it: 1) is not a legitimate exercise of Congress’s taxing power, 2) violates Lim’s Fifth Amendment right against compulsory self-incrimination, and 3) is unconstitutionally vague because the statutory definition of the pertinent “firearm” (ie., a sawed-off shotgun) fails to provide a definition of “barrel” or the specific means of measuring a shotgun barrel. The magistrate judge recommended that Lim’s motion be denied, and the district court adopted the magistrate judge’s report and recommendation. Lim subsequently pled guilty while reserving his right to appeal the denial of his motion to dismiss. He was sentenced to a 27-month prison term.
II.
A.
The United States Constitution, Art. I, § 8, cl. 1, grants Congress the power to lay and collect taxes. Inherent in the power to tax is the prerogative to decide what to tax and how large of a tax to impose. Those choices will have regulatory effects in the sense that the more heavily a particular activity is taxed, the more people will be deterred from engaging in that activity. Yet, the Supreme Court has rejected the notion that the regulatory character of tax legislation ren *913 ders the legislation an invalid exercise of the taxing power:
Every tax is in some measure regulatory. To some extent it interposes an economic impediment to the activity taxed as compared with others not taxed. But a tax is not any less a tax because it has a regulatory effect, and it has long been established that an Act of Congress which on its face purports to be an exerсise of the taxing power is not any the less so because the tax is burdensome or tends to restrict or suppress the thing taxed.
Sonzinsky v. United States,
Lim contends that section 5861(d) exceeds Congress’s taxing power because the purpose of the statute is not to tax, but instead to prohibit the possession of certain firearms.
1
However, when taken in context with the rest of the statute, section 5861(d) reasonably may be construed as “part of the web of regulation aiding enforcement of the transfer tax provision in section 5811.”
United States v. Ross,
Lim nonetheless contends that section 5861(d) is not a valid use of the taxing power as applied to him because it was impossible for him to register the particular weapon he possessed. Lim relies on
United States v. Dalton,
Dalton,
however, readily may be distinguished, bеcause “ ‘there is no statutory ban on the registration of short-barreled shotguns.’ ”
United States v. McCollom,
B.
Lim also argues that section 5861(d) is unconstitutional because it violates his Fifth Amendment right against compulsory self-incrimination. 26 U.S.C. § 5848 generally prohibits the use of information supplied in compliance with the registration requirement in a criminal prosecution of the registrant. Nonetheless, Lim posits that the registration mándate violates the Fifth Amendment rights of any individual who attempts to possess a sawed-off shotgun in violation of state lаw, in that the data collected by the Inter-
*915
nal Revenue Service pursuant to the Act could lead state authorities to other evidence that would enable them to establish the individual’s unlawful possession of the firearm. However, in
United States v. Freed, supra,
the Supreme Court held that the registration requirement does not violate the Self-Incrimination Clause of the Fifth Amendment because “the Solicitor General has advised us that the information in the hands of the Internal Revenue Service, as a matter of practice, is not available to
state
or other federal authorities, and, as a mattеr of law, cannot be used as evidence in a criminal proceeding with respect to a prior or concurrent violation of law.”
C.
Finally, Lim argues that section 5861(d)’s ban on the possession of an unregistered firearm is unconstitutionally vague because, with respect to sawed-off shotguns, the statute does not define the term “barrel” or explain how to measure the barrel of such a gun. As we have noted, section 5861(d) makes it unlawful for any person to possess a firearm that is not registered to him in the Firearms Record. Section 5845(a)(2) explicitly defines “firearm” to include a sawed-off shotgun with an overall lеngth of less than 26 inches or a barrel length of less than 18 inches. Although the statute itself does not specify how to measure the exact length of a shotgun’s barrel or the total length of the gun, the Code of Federal Regulations, 27 C.F.R. § 479.11, provides clear instruction in that regard.
Vagueness challenges thаt do not involve First Amendment freedoms must be analyzed as applied to the specific facts of the case at hand.
United States v. Mazurie,
A challenge to a statute’s vagueness “rest[s] on the lack of notice, and hence may be overcome in any specific case where reasonable persons would know that their conduct is at risk.”
Maynard v. Cartwright,
In
United States v. Powell,
the Supreme Court held that 18 U.S.C. § 1715, which prohibits the mailing of firearms “capable of being concealed on the person,” is not unconstitutionally vague as applied to the mailing of a 22 inch-long sawed-off shotgun.
[The statute] intelligibly forbids a definite course of conduct: the mailing of concealable firearms. While doubts as to the applicability of the language in marginal situations may be conceived, we think that the statute gave respondent adequate warning that her mailing of a 22-inch-long sawed-off shotgun was a criminal offense.
Ibid.
The Court acknowledged that Congress might have drafted the statute in more specific terms, as by delimiting the size of the firearms that could not be mailed.
Id.
at 93-94,
In the present case, the statute gave Lim more than adequate wаrning of what is prohibited by defining the minimum length of both the overall shotgun and its barrel. In contrast to the statute at issue in
Powell,
section 5845 supplies the specific measurements that will bring a shotgun within the proscribed zone. Contrary to Lim’s argument, “barrel” is not an inherently confusing term. Although, as Lim suggests, there may be marginal situations in which the legality of a sawed-off shotgun will depend on the particular method used to measure the barrel length, this is not one of them: Lim’s shotgun, with an overall length of 24 inches and barrel length of
I4?k
inches, fell well short of the published minimum lengths. Just as in
Powell,
Lim “has been given clear notice that a reasonably ascertainable standard of conduct is mandated; it is for him to insure that his actions do not fall outside the legal limits.”
Id.
at 92,
III.
For the reasons we have given, we reject Lim’s challenges to the constitutionаlity of 26 U.S.C. § 5861(d) and Affirm his conviction.
Notes
. The Government does not alternatively defend this Act under the Commerce Clause, see U.S. Const., Art. I, § 8, cl.3, and therefore we do not consider whether the Act may be sustained as an exercise of congressional Commerce Clause authority.
. In
United States v. Ross,
this circuit joined a majority of our sister circuits in rejecting the rationale of
Dalton. 9
F.3d 1182, 1193-94 (7th Cir.1993),
vacated and remanded on other grounds,
. Wisconsin Statute 941.28(4) allows for the possession of a short-barreled shotgun by "any person who has complied with the licensing and registration requirements under 26 U.S.C. § 5801 to § 5872.”
. Even if possession of a sawed-off shotgun were banned outright in Wisconsin, we would still reject Lim’s reliance on
Dalton
because Lim could have complied with both the registration requirement and the ban on possession by refraining from possessing the gun in Wisconsin.
See United States v. Rogers, supra,
