Federal gun prosecutions in Milwaukee, WI can bring a second wave of exposure to an existing criminal case. Beyond the underlying accusation, you may face additional prison time, sentences that must run back-to-back, seizure of firearms, and restrictions that follow you for years. The ATF and federal prosecutors often use firearm charges to strengthen cases involving drug trafficking, conspiracy, robbery, and violent offenses.
The gun does not have to be used in the way most people imagine. Federal charges may grow out of constructive possession, a straw purchase, false statements to a dealer, access to an unregistered weapon, or a firearm found near alleged criminal activity. In some cases, the firearm allegation is what turns a difficult prosecution into one carrying years of additional prison exposure.
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A federal gun case can be built on assumptions that deserve to be challenged. Combs Waterkotte defends clients in Milwaukee, WI and across the country, and our Milwaukee, WI federal defense lawyers investigate the search, the alleged possession, the firearm’s ownership, the surrounding circumstances, and every possible constitutional violation.
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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Facing Federal Criminal Charges? Why They’re Different and How to Win
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On this page, you will learn about:
- What makes a gun charge a federal offense
- What to do if you’re under federal investigation
- Common federal firearm charges
- Mandatory minimums and sentencing enhancements
- The Armed Career Criminal Act
- When to hire a federal gun charges lawyer
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How Federal Jurisdiction Applies to Gun Cases
The line between a state gun case and a federal prosecution is not always obvious. A case may cross that line because of the weapon involved, the accused person’s legal status, the location of the alleged conduct, or a claimed connection to interstate commerce. Violations of the Gun Control Act, the National Firearms Act, or another federal statute may give the U.S. government authority to prosecute. Local agencies can also refer cases upward when they want federal prosecutors to pursue harsher consequences.
Federal prosecutors may become involved if:
- A prohibited person allegedly possessed a gun or ammunition
- The weapon allegedly traveled in or affected interstate or foreign commerce
- The firearm was supposedly used, carried, or kept in connection with another federal crime
- The investigation concerns illegal sales, straw buyers, trafficking networks, or cross-border smuggling
- The gun falls into a specially regulated category under federal law
- Authorities discover a defaced or missing serial number
- The incident happened on federal property or during another federal investigation
- The government believes the weapon played a role in organized criminal activity
The first sign of trouble may come late in the investigation. Agents may already have traced the gun, interviewed witnesses, reviewed online activity, pulled phone data, and gathered physical evidence before the accused knows federal prosecutors are involved.
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.
If federal agents may be building a gun case against you:
- Do not try to talk your way out of it. Federal agents are trained interviewers, and even an accurate answer can be taken out of context or compared against other evidence. Tell them you want a federal gun charges attorney in Milwaukee, WI, then stop answering questions.
- Respect the warrant without surrendering extra ground. Never interfere with a lawful search, but do not sign consent forms or casually authorize agents to search beyond what the warrant permits.
- Preserve records that may tell your side of the story. That may include firearm receipts, transfer documents, text messages, emails, photos, location records, and communications with sellers or buyers.
- Do not contact witnesses or codefendants about the investigation. A message meant to “get everyone on the same page” can be interpreted as witness tampering or obstruction.
- Get legal representation before the government makes the next move. Early intervention may give your attorney time to investigate, preserve favorable evidence, communicate with prosecutors, and prepare for a search, arrest, or indictment.
Common Federal Gun Charges in Milwaukee, WI
Federal Prohibited-Person Firearm Charges
The phrase “felon in possession” covers only part of 18 U.S.C. § 922(g). The statute reaches multiple classes of people barred from possessing guns or ammunition, even when the firearm was never fired or displayed.
A person may be legally barred from possessing a gun or ammunition because of:
- 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
These cases often turn on knowledge. Federal prosecutors generally must show that the defendant knowingly possessed the firearm or ammunition and was aware of the relevant status that placed them under the federal ban.
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 is often disputed when a gun is found in a shared home, borrowed vehicle, hotel room, or another location used by several people.
Using, Carrying, or Possessing a Gun Under 18 U.S.C. § 924(c)
A gun found in the orbit of another federal case can dramatically raise the stakes. Section 924(c) creates a separate offense for certain firearm conduct connected to qualifying drug trafficking or violent crimes.
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
The firearm does not have to be fired. Prosecutors may argue that a gun advanced or protected the alleged crime because it was found near:
- 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 defense may challenge whether the accused knew about the firearm, could access it, or possessed it for any reason connected to the alleged offense.
False Actual-Buyer Allegations
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
Agents may build the case from messages, bank or payment-app records, dealer paperwork, surveillance video, and whatever the purchaser or recipient said during interviews.
Illegal Gun Trafficking
Federal firearms trafficking cases often focus on what the accused knew about the destination or intended use of the weapons. 18 U.S.C. § 933 can apply when firearms are allegedly transferred, transported, or received with knowledge or reasonable cause to believe that unlawful conduct will follow.
Federal agents may characterize firearms as trafficked when they were allegedly:
- 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
Unlicensed Firearms Dealing
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.
The case may turn on the overall pattern of activity, including:
- 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 Information Given to a Licensed Gun Dealer
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.
Examples of information prosecutors may claim was falsified include:
- 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
Possible defenses may focus on confusion, an ambiguous question, an honest mistake, or information that was not material to the transaction. The wording of the form and the accused person’s knowledge at the time can matter greatly.
Possession of a Firearm With an Altered or Obliterated Serial Number
Under 27 CFR § 478.34, federal law prohibits knowingly transporting, receiving, or possessing certain firearms with serial numbers that have been removed, altered, or obliterated.
The case may depend on questions such as:
- 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
An altered serial number may also increase the recommended sentence under the federal sentencing guidelines.
Federal Charges Involving Privately Made Firearms
A privately made firearm is not automatically illegal simply because an individual assembled it. Criminal exposure may arise depending on:
Federal agents may look at the entire life of the firearm, including:
- Who assembled and ultimately possessed it
- The parts, process, and configuration used to make it
- Whether it remained for personal use or was transferred to someone else
- Whether multiple weapons were built for sale
- Whether federal marking requirements applied
- Whether the firearm appeared in another criminal investigation
Even where the firearm itself is not prohibited, the absence of a required serial number may increase the recommended guideline sentence.
NFA Weapons and Registration Offenses
The National Firearms Act imposes registration, taxation, manufacturing, and transfer requirements on certain weapons and devices.
NFA-regulated firearms include:
- Automatic weapons
- Rifles and shotguns below specified barrel-length requirements
- Silencers or sound suppressors
- Destructive devices
- Modified firearms that meet an NFA definition
- Other specially classified weapons
An NFA prosecution may be based on alleged possession of an unregistered weapon, unlawful manufacture or transfer, or missing required identifying information. Depending on the charge, a conviction may expose the accused to as much as 10 years in federal prison, financial penalties, and firearm forfeiture.
Penalties for Federal Gun Charges in Milwaukee, WI
The statute provides only part of the sentencing picture. A person’s record, the characteristics of the weapon, the presence of drugs or violence, mandatory minimum laws, and the United States Sentencing Guidelines can all move the potential punishment higher or lower.
| Charge or Allegation | Potential Prison Exposure |
|---|---|
| Unlawful firearm possession by a prohibited person under § 922(g) | Up to 15 years in many cases, with a 15-year mandatory floor when ACCA applies |
| Firearm possession or use connected to a drug trafficking crime or crime of violence | Mandatory minimum of five years, seven years if brandished, or 10 years if discharged, generally served consecutively |
| Buying a firearm for another person under § 932 | A maximum of 15 years in ordinary cases, potentially rising to 25 years when the weapon is believed destined for certain serious offenses |
| Federal gun trafficking under § 933 | Up to 15 years in federal prison |
| Operating as an unlicensed firearms dealer | A possible federal sentence of as much as five years |
| Making false statements during a firearm purchase under § 922(a)(6) | Potential imprisonment for up to 10 years |
| Federal charges involving an altered firearm serial number | A possible five-year sentence plus additional guideline consequences |
| Illegal possession, manufacture, or transfer of an NFA-regulated firearm | Up to 10 years in federal prison, fines, and firearm forfeiture |
| Federal machine gun offenses | Frequently punishable by as much as 10 years, although a connection to drug trafficking or violence can drive the sentence much higher |
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.
Federal sentences may also include:
- Thousands of dollars or more in fines
- Years of supervised release after leaving prison
- Government forfeiture claims against firearms, ammunition, money, vehicles, and other assets
- A lasting ban on firearm possession
- Collateral damage to career prospects, housing access, and occupational licensing
- Potential immigration and residency consequences for anyone who is not a U.S. citizen
A federal sentence is not typically cut short through parole. Although some prisoners can earn good-conduct credit, federal incarceration generally means serving the great majority of the term imposed.
The 15-Year Armed Career Criminal Enhancement
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.
A § 922(g) defendant may face the enhancement when their record includes three prior offenses that satisfy ACCA’s federal definitions and were not all part of the same criminal occasion.
ACCA litigation can become highly technical. The court may compare the wording of the prior state statute to the federal definition, review charging papers or plea records, and determine which version of the law controls. A state-law label is not necessarily the final word.
Potential ACCA challenges include:
- Whether the prior offense meets the federal definition
- Whether the conviction records establish the required elements
- Whether multiple offenses occurred on different occasions
- Whether a conviction was vacated, expunged, or otherwise invalid
- Whether the accused’s civil rights had been restored
Because the ACCA creates a mandatory minimum sentence, resolving even one disputed prior conviction can make an enormous difference.
Federal Sentencing Enhancements in Milwaukee, WI Firearm Cases
Avoiding a mandatory minimum does not necessarily mean avoiding a lengthy sentence. Federal judges begin by calculating the advisory guideline range, and enhancements can dramatically increase that recommendation.
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 Should You Contact a Federal Firearms Defense Lawyer?
Federal investigations often begin long before anyone is arrested. Speaking with a federal defense lawyer as soon as you suspect you are involved may help protect your rights from the very beginning.
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
The earlier a defense attorney becomes involved, the more options may exist. Depending on the circumstances, counsel can handle communications with investigators, help avoid unnecessary interviews, identify constitutional issues, preserve evidence, assess the strength of the government’s case, and present mitigating information before prosecutors decide whether to seek an indictment.
Get Help With Federal Firearm Charges in Milwaukee, WI
Combs Waterkotte defends clients from Milwaukee, WI and across the country against serious federal criminal allegations. Our team includes former prosecutors who know how the government builds firearm cases from the investigation through trial.
We approach every case with a trial-ready mindset, thoroughly examining the government’s evidence, challenging unlawful searches and seizures, scrutinizing witness credibility, and fighting unsupported sentencing enhancements.
Some cases should be resolved through negotiation. Others demand a courtroom fight. We prepare for both, so every decision is based on strategy rather than pressure.
High-stakes federal cases require more than surface-level review. Combs Waterkotte combines decades of criminal defense experience with a dedicated investigator and a team accustomed to defending serious charges from the first contact with agents through trial and post-conviction proceedings.
Do not wait for the government to make the next move. If you are facing a federal firearm investigation or charge, contact us online or call (314) 900-HELP to discuss your case with an experienced Milwaukee, WI federal gun defense attorney.
