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Crimes | Types of Criminal Charges » Gun Crime Charges Defense » Gun With No Serial Number

Gun With No Serial Number

Is it legal to possess a gun with no serial number in Minnesota? Our focus here will be on homemade firearms under Minnesota law. But we’ll touch on a few other privately made firearm (ghost gun) topics in passing.

Historically most guns have not had serial numbers. And today large numbers of gun in common use and possession have no serial number.

And it has not been a crime to possess a firearm without a serial number, as a general matter.

privately made firearm not ghost gun
Gun with no serial number

Minnesota Statute §609.667: Serial Number

Recently, some prosecutors have been charging people with a felony crime under Minn. Stat. §609.667 Felony Possess Firearm Without Serial Number:

The first two subsections of the statute aim at conduct seen with stolen firearms. This conduct could be evidence of a stolen firearm.

The third subsection is confusing, including to some trained lawyers working as prosecutors in Minnesota. At first glance, subsection 3 appears to make possession of a gun without a serial number (“ghost gun”) a crime. But, constitutional principles of due process and basic fairness require that the law must provide fair notice.

This law is incomprehensible to most readers, and fails that test; making it appear unconstitutional on due process grounds, for vagueness.

But let’s move past that for now, and chase down the legal breadcrumbs deeply embedded in the statute.

Incorporated Federal Statutory Definition: NFA “Firearms”

The statute mentions “a firearm that is not identified by a serial number.”

Then it goes on to say “As used in this section, ‘serial number or other identification’ means the serial number and other information required under United States Code, title 26, section 5842, for the identification of firearms.”

When we look at 26 United States Code 5842 it says:

The term “firearm” as used in Title 26 of the United States Code has a specific statutory definition. This is because the statute says that it does.

The definition of “firearm” in Title 26 of the United States Code, describes what we commonly call NFA weapons. These are firearms subject to the National Firearms Act of 1934; such as machine guns, short barreled rifles, etc.

This is the definition that Minnesota Statutes §609.667 incorporates. So, the only “firearms” that statute attempts to criminalize are NFA firearms (not any privately made firearm or “ghost gun”).

Therefore, almost everyone facing this charge should ask a judge to dismiss (unless an NFA firearm.)

1791: Serial numbers not in common use

Second Amendment protection

Does the Second Amendment of the United States Constitution provide legal protection from criminal prosecution relating to firearm serial numbers? At this point we should note some of the types of serial number cases protected:

  • obliterate, remove or alter serial number or other identification of a firearm
  • no serial number ever on firearm

The Second Amendment to the United States Constitution states:

We believe that that the plain text of the Second Amendment protects the conduct prohibited by Minn. Stat. §609.667, and that conduct was unregulated in 1791. And, we believe, under the U.S. Supreme Court’s holding in New York State Rifle & Pistol Assn, Inc. v. Bruen, 142 S. Ct. 2111 (US 2022), this statute is facially unconstitutional.

Historical analysis of Serial Numbers on Guns

Laws did not require serial numbers for firearms manufactured and imported until the Gun Control Act of 1968. But even in 1968 the law did not prohibit mere possession of a firearm with an altered serial number. Then in 1990, the Congress amended 18 U.S.C. §922 , in the 1990 Crime Control Act, to insert:

But no similar requirement existed in 1791. At that time, people did not require or commonly use serial numbers on guns.

The U.S. Supreme Court has yet to decide the conflict in the federal appellate circuit courts. Therefore, we don’t know for sure how the U.S. Supreme Court will decide this question.

So, a defendant may wish to raise this issue in defense. But a prudent person would avoid the risk of prosecution, while it still exists.

ghost gun 300 privately made firearm
Not a “ghost gun,” a privately made firearm

Implications of a Gun Without a Serial Number

A person may reduce risk of criminal prosecution by staying away from possession of a firearm with no serial number. But what about people who possess privately made firearms? They might avoid police trouble under Minnesota Statute §609.667 (3) by placing a serial number on the firearm. This is not a “ghost gun.” Privately made firearms are a proud tradition of our people and our nation since its founding.

Additional Defenses: serial number cases

Other defenses can mean the accused is not-guilty. For example, a person is not-guilty of a crime requiring knowing possession of a gun, without evidence proving knowing possession.


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