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Federal Gun Charges Lawyer Milwaukee, WI

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Last Updated: July 22, 2026

Federal gun charges in Milwaukee, WI can turn an already serious criminal case into one carrying mandatory prison time, consecutive sentences, firearm forfeiture, and lasting restrictions on your rights. These cases are commonly investigated by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and prosecuted by the U.S. Attorney’s Office, often alongside federal drug trafficking, conspiracy, robbery, or violent crime allegations.

Federal prosecutors do not always need to prove that a weapon was fired, brandished, or even carried. A case may rest on alleged possession, access to a firearm, a purchase made for another person, inaccurate information on federal paperwork, or the ownership of a regulated weapon. In Milwaukee, WI, those allegations can substantially increase the punishment tied to a separate federal offense.


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When federal agents and prosecutors set their sights on someone in Milwaukee, WI, Combs Waterkotte is prepared to push back. Our federal criminal defense team serving Milwaukee, WI looks beyond the fact that a gun was found and asks the questions that can change a case: Who knew it was there? Who could control it? Was the search lawful? Can the government actually connect it to the alleged crime?

If you have been arrested, received a target letter, learned that ATF agents are investigating you, or believe federal charges may be coming, contact us online or call (314) 900-HELP immediately. What happens before an indictment can shape the entire case.

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    Below, we explain:

    • What gives the federal government authority over a firearm case
    • What not to do when you learn you are under investigation
    • Which federal gun charges prosecutors commonly file
    • How consecutive sentences and enhancements can increase prison exposure
    • Why the Armed Career Criminal Act can change the entire case
    • How a federal gun charges lawyer can intervene


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    Why Are Some Gun Charges Prosecuted Federally?

    A firearm arrest may start with local police, but that does not mean it will stay in state court. Federal prosecutors can take over when the allegations fall under the Gun Control Act, the National Firearms Act, or another federal criminal law. In some cases, state authorities hand the matter over because federal charges offer prosecutors a tougher sentencing path.

    Federal prosecutors may become involved if:

    • The government claims the firearm crossed state or national boundaries
    • The accused allegedly could not lawfully possess a firearm
    • The gun was found during a drug, robbery, conspiracy, or violent crime investigation
    • The case involves suspected trafficking, unlicensed sales, straw purchasing, or smuggling
    • The weapon is a machine gun, silencer, short-barreled rifle, short-barreled shotgun, or destructive device
    • Identifying marks or serial numbers were allegedly removed or changed
    • The alleged offense took place within federal jurisdiction
    • Federal agents connect the firearm to a larger criminal operation

    Federal agents rarely start from zero when they make contact. Before you realize a case exists, they may already have video footage, digital communications, witness interviews, firearm tracing records, and laboratory evidence in hand.



    What to Do During a Federal Firearms Investigation in Milwaukee, WI

    You do not have to be arrested to need a federal defense attorney. By the time ATF agents contact you, execute a search warrant, or ask to speak with you, they may have already spent weeks or months building their case. What you do next can significantly affect the outcome.

    Take the following steps as soon as you suspect a federal firearms investigation:

    • Do not speak with federal agents without a federal firearms attorney in Milwaukee, WI. You have the right to remain silent. Even truthful statements can be misunderstood or used against you later.
    • Do not consent to additional searches. If agents have a warrant, do not interfere, but you are not required to give permission for searches beyond the warrant’s scope.
    • Preserve potential evidence. Keep text messages, emails, receipts, firearm purchase records, photographs, and other documents that may help explain what happened. Do not delete or destroy anything.
    • Avoid discussing the investigation with others. Phone calls, text messages, emails, and social media posts can become evidence. Conversations with friends, family members, or potential witnesses may also be scrutinized.
    • Contact a federal criminal defense lawyer in Milwaukee, WI immediately. Early representation can protect your rights, prevent unnecessary mistakes, and allow your attorney to communicate with investigators on your behalf.


    Common Federal Gun Charges in Milwaukee, WI


    Federal Prohibited-Person Firearm Charges

    Under 18 U.S.C. § 922(g), several categories of people are prohibited from possessing firearms or ammunition.

    Prohibited persons may include:

    • A prior conviction carrying a possible sentence of more than one year
    • Fugitive status
    • Unlawful use of controlled substances
    • A qualifying domestic violence restraining order
    • A conviction for certain domestic violence offenses
    • Dishonorable discharge or certain immigration statuses

    The prosecution must generally connect two pieces of the puzzle: the accused knowingly possessed the gun or ammunition, and they knew about the legal status that made that possession prohibited.

    The government may try to prove possession in either of two ways:

    • Actual possession: The accused allegedly carried the firearm or had it physically on their body.
    • Constructive possession: The accused allegedly knew where the gun was and had both the power and intent to exercise control over it.

    Constructive possession can become the fault line of the case when a firearm is recovered from a place multiple people could access, such as a shared residence, borrowed car, hotel room, or common storage area.

    Using, Carrying, or Possessing a Gun Under 18 U.S.C. § 924(c)

    Under 18 U.S.C. § 924(c), the government may pursue an additional charge when a firearm was allegedly used or carried in relation to a drug trafficking crime or crime of violence, or possessed in furtherance of one.

    A § 924(c) sentence is generally stacked on top of the punishment for the underlying crime rather than served at the same time:

    • At least five years for possessing, using, or carrying a firearm
    • At least seven years if the firearm was brandished
    • At least 10 years if the firearm was discharged
    • Higher minimums when machine guns, silencers, or destructive devices are involved

    A § 924(c) theory may rest entirely on where the gun was found. The government often argues that proximity to the following items shows the firearm was kept to further the alleged crime:

    • Controlled substances
    • Large amounts of currency
    • Baggies, scales, or packaging supplies
    • Ledgers, customer lists, or distribution records
    • Other items prosecutors associate with drug sales

    The key fight may be over the connection between the person, the firearm, and the underlying offense. Defense counsel can challenge whether the accused knew the gun was there, had the ability to reach or control it, or possessed it to advance any criminal activity.

    Buying a Firearm for Another Person

    A straw purchase generally occurs when one person buys a firearm for someone else while falsely claiming to be the actual buyer. Charges may arise from statements made on ATF Form 4473 or under 18 U.S.C. § 932.

    The government and defense may focus on:

    • Payment apps, cash withdrawals, or reimbursements
    • Who researched, requested, or picked out the firearm
    • The buyer’s plan before entering the store
    • Whether the gun was genuinely purchased as a gift
    • Whether the eventual recipient was prohibited or intended to use the firearm unlawfully

    The government will often try to reconstruct the transaction from beginning to end. That may involve reviewing texts, reimbursements, store footage, purchase documents, online messages, and statements made after the sale.

    Illegal Gun Trafficking

    18 U.S.C. § 933 prohibits certain transfers, transportation, or receipt of firearms when the accused knows or has reasonable cause to believe the firearm will be used, possessed, or transferred unlawfully.

    Conduct that may lead to a federal trafficking charge includes firearms being:

    • Bought for someone legally barred from possessing them
    • Transported through multiple states or across an international border
    • Transferred to people suspected of drug or violent offenses
    • Obtained through a chain of straw buyers
    • Repeatedly resold outside the federal licensing system
    • Exported or smuggled to another country

    Dealing Firearms Without a Federal License

    The legal line between a private seller and an unlicensed firearms dealer depends on the surrounding facts. Federal law generally requires an FFL when someone is engaged in firearm sales as a business, but it does not convert every personal transfer into a federal crime.

    To argue that someone was acting as a dealer, the government may look at:

    • The number and frequency of sales
    • How quickly firearms were resold after purchase
    • Whether the accused advertised firearms for sale
    • Customer communications and payment records
    • Whether transactions were intended to produce a profit
    • Whether the accused maintained firearm inventory

    False Statements During a Firearm Purchase

    Under 18 U.S.C. § 922(a)(6), it is illegal to knowingly make a false statement to a federally licensed firearms dealer when that statement is material to the legality of the sale.

    Alleged false statements may involve:

    • The actual transferee or intended recipient
    • Felony or other prohibiting convictions
    • Unlawful drug use
    • Domestic violence history or court orders
    • Nationality and immigration status
    • Personal identification and residence information

    The government must do more than point to an inaccurate box on a form. The defense may dispute whether the response was truly false, whether the accused understood it was wrong, or whether it made any legal difference to the sale.

    Possessing a Gun With a Removed Serial Number

    When agents recover a firearm with a filed-down, scratched-off, or otherwise changed serial number, they may add another federal charge. Federal regulations prohibit certain conduct involving those firearms when the accused knew of the alteration.

    Defense counsel may examine:

    • Whether the accused knew the serial number had been altered
    • Whether the markings meet the statutory definition
    • Whether forensic testing can recover the original number
    • Whether the government can connect the accused to the firearm

    The alleged alteration can affect more than guilt or innocence. It may also support an enhancement when the sentencing guidelines are calculated.

    Privately Made Firearms and “Ghost Guns”

    Building or assembling a gun for personal use does not, by itself, automatically make the firearm illegal. Federal problems involving a privately made firearm usually depend on the person involved, the weapon’s configuration, and what happened after it was made.

    A privately made firearm case may turn on:

    • The accused person’s legal ability to possess guns
    • Whether the firearm was assembled lawfully
    • Any later sale, transfer, or distribution
    • Evidence of commercial manufacturing or dealing
    • Missing, incomplete, or altered identifying marks
    • An alleged connection to trafficking, drugs, or violent crime

    A privately made firearm can also affect sentencing if prosecutors claim it lacked markings required by federal law.

    Charges Involving Machine Guns, Silencers, and Short-Barreled Firearms

    Certain firearms and devices are subject to stricter federal controls under the National Firearms Act. The law regulates their registration, manufacture, taxation, possession, and transfer.

    NFA rules may apply to:

    • Machine guns
    • Shortened rifles
    • Shortened shotguns
    • Suppressors, including devices commonly called silencers
    • Certain bombs, explosives, and destructive devices
    • Unusual or concealed weapons classified as “any other weapon”

    The issue may be registration, how the weapon was built, how it changed hands, or whether identifying marks were removed. These are felony-level allegations, and a conviction may carry up to 10 years of imprisonment along with fines and loss of the weapon.



    How Much Prison Time Can a Federal Gun Charge Carry?

    Two people charged with firearm offenses may face very different outcomes. Federal sentencing depends on what prosecutors can prove, which statute applies, whether the law requires consecutive time, the accused’s criminal history, and how the court calculates the advisory guideline range.

    Federal Gun Offense Potential Prison Exposure
    Possessing a gun or ammunition while federally prohibited Ordinarily punishable by as much as 15 years; the Armed Career Criminal Act may require at least 15 years for qualifying defendants
    Firearm possession or use connected to a drug trafficking crime or crime of violence Five years or more added to the underlying sentence, with seven years for brandishing and 10 years for firing the weapon
    Buying a firearm for another person under § 932 Up to 15 years, or up to 25 years when the buyer knows or has reason to believe the firearm will be used to commit certain serious crimes
    Firearms trafficking under 18 U.S.C. § 933 Up to 15 years in federal prison
    Engaging in the business of firearm sales without federal licensing Generally up to five years in federal prison
    False statements on firearm purchase paperwork Up to 10 years in federal prison
    Possessing a firearm with an altered or obliterated serial number under § 922(k) Typically punishable by as much as five years, and the serial-number issue may also raise the guideline range
    Illegal possession, manufacture, or transfer of an NFA-regulated firearm A possible 10-year prison term, financial penalties, and loss of the weapon
    Possessing or transferring a prohibited automatic weapon A possible 10-year sentence on the machine gun charge alone, with more severe consequences if § 924(c) or another enhancement applies


    The penalties listed above are starting points, not predictions. The sentence in a particular case may rise or fall based on the statute charged, the number and type of weapons, prior convictions, any mandatory minimum, and the calculation required by the federal sentencing guidelines.

    Prison is only one possible consequence of a federal firearm conviction. A sentence may also involve:

    The federal system does not offer traditional parole. While eligible prisoners may earn limited good-conduct credit, a federal sentence usually requires serving most of the term imposed by the court.

    How the Armed Career Criminal Act Can Increase a Gun Sentence

    For some defendants, the biggest battle is not whether § 922(g) applies, but whether the government can trigger the ACCA. That designation replaces the ordinary sentencing range with a mandatory minimum term of 15 years.

    The government generally must identify at least three qualifying prior convictions for violent felonies or serious drug offenses. It must also show that those offenses were committed on occasions separate from one another.

    A conviction that sounds violent in ordinary conversation may still fail to qualify under federal law. These disputes often require a close reading of statutes, old court documents, and changing ACCA precedent.

    Potential ACCA challenges include:

    • Whether the statute of conviction is broader than ACCA’s federal definition
    • Whether the government can prove the specific subsection or elements involved
    • The timing, location, and relationship between the alleged prior offenses
    • Vacatur, expungement, pardon, or other relief affecting a conviction
    • Any restoration of civil and firearm rights

    Because the ACCA creates a mandatory minimum sentence, resolving even one disputed prior conviction can make an enormous difference.

    Federal Firearm Sentencing Guideline Enhancements

    The sentence in a federal firearm case is influenced by more than the statute itself. Even when the law does not require a mandatory minimum prison term, guideline enhancements may substantially increase the advisory sentencing range.

    Guideline enhancements may be tied to claims involving:

    • Possessing numerous firearms
    • Guns reported stolen
    • Removed, altered, or unreadable serial numbers
    • Supplying firearms to prohibited individuals or trafficking activity
    • Machine guns, suppressors, destructive devices, or other NFA-regulated weapons
    • Using or possessing a firearm during another felony offense
    • Dangerous conduct while attempting to flee law enforcement
    • Directing or organizing other participants
    • Acts prosecutors characterize as obstruction

    The advisory guideline range is only one part of the sentencing decision, but it carries significant weight. Defense counsel may dispute factual allegations, challenge the legal basis for enhancements, present mitigating information, and advocate for a sentence below the recommended range.

    When to Call a Federal Gun Defense Attorney

    You should contact a federal defense lawyer in Milwaukee, WI as soon as you believe an investigation may involve you. You do not need to wait for an arrest or indictment.

    You should take the situation seriously if:

    • ATF, FBI, DEA, or another federal agency contacts you
    • Agents arrive with a federal search warrant
    • A subpoena is issued to someone connected to you
    • Firearms, computers, phones, or business records are confiscated
    • A federal target letter arrives
    • An alleged accomplice or codefendant is taken into custody
    • A state prosecution unexpectedly pauses or is dismissed
    • You discover federal prosecutors have become involved

    Getting a lawyer involved early may allow your attorney to deal directly with investigators, advise you before questioning occurs, preserve favorable evidence, evaluate search issues, assess your potential exposure, and advocate with prosecutors before formal charges are filed.



    Contact Combs Waterkotte About Federal Gun Charges in Milwaukee, WI

    Federal firearm cases move quickly and carry enormous consequences. Combs Waterkotte represents people in Milwaukee, WI and nationwide, drawing on the insight of former prosecutors who understand federal investigations, charging decisions, and courtroom strategy.

    We do not wait until the courthouse doors open to prepare for trial. Our attorneys investigate the facts, review search warrants and seizure procedures, examine witness credibility, and challenge unsupported allegations that could increase federal sentencing exposure.

    When negotiations make sense, we negotiate from a position of strength. When they don’t, we are prepared to take your case to court.

    With decades of combined criminal defense experience, a dedicated investigator on staff, and a record of defending clients against some of the most serious state and federal charges, our team has the resources and experience to handle high-stakes firearm cases from investigation through trial and appeal.

    A federal gun investigation can gain momentum long before an indictment is returned. Reach out to our firm online or call (314) 900-HELP today to discuss your options with a Milwaukee, WI federal firearm defense lawyer.

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