A federal firearm case in Louisiana rarely stays confined to the gun itself. One allegation can trigger mandatory prison terms, add time to another sentence, put your firearms at risk of forfeiture, and affect your rights long after the case ends. ATF agents and the U.S. Attorney’s Office frequently pursue these charges as part of broader investigations involving drug trafficking, federal conspiracy, robbery, or violent crimes.
You can face a federal gun charge without ever pulling a trigger. The government may focus instead on where the firearm was found, who could control it, how it was purchased, whether registration rules were followed, or what was written on a purchase form. Once attached to another case in Louisiana, a firearm count can become the part that drives the sentence.
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A federal gun case can be built on assumptions that deserve to be challenged. Combs Waterkotte defends clients in Louisiana and across the country, and our Louisiana 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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This page covers:
- 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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What Makes a Gun Charge Federal?
Most firearm cases begin under state law. However, a case may enter the federal system when the alleged conduct violates the federal Gun Control Act, the National Firearms Act, or another federal statute. State and local authorities may also refer a case to federal prosecutors when they believe federal penalties will be more severe.
Common reasons a firearm case enters federal court include:
- 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
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 Should You Do If You’re Under Investigation for a Federal Gun Crime in Louisiana?
You may need a lawyer long before formal charges appear. Once ATF agents begin asking questions or executing warrants, the investigation may already be well underway. This is not the moment to improvise, explain, or hope the problem disappears on its own.
If you believe you are under investigation for a federal firearm offense:
- 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 Louisiana, 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 Louisiana
Federal Prohibited-Person Firearm Charges
Under 18 U.S.C. § 922(g), several categories of people are prohibited from possessing firearms or ammunition.
People who may fall under § 922(g) include:
- People convicted of crimes punishable by more than one year in prison
- Fugitives from justice
- Unlawful users of controlled substances
- Certain people subject to domestic violence restraining orders
- People convicted of qualifying domestic violence offenses
- Certain noncitizens and people dishonorably discharged from the military
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.
Federal firearm possession is commonly divided into two categories:
- Actual possession: The firearm was allegedly found directly on the person.
- Constructive possession: The person allegedly knew the firearm was present and had the ability and intention to control it.
Shared spaces create room for reasonable doubt. If the firearm was found in a jointly occupied apartment, another person’s car, a motel room, or an area open to multiple people, prosecutors still must tie the accused personally to the weapon.
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.
The mandatory minimum sentence generally must be served consecutively to the sentence for the underlying offense:
- 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
No shot needs to be fired for prosecutors to bring this charge. They may claim the firearm helped secure, protect, or advance the alleged operation because it was located close to:
- Narcotics
- Money
- Packaging equipment
- Sales or distribution records
- Anything else agents label as evidence of trafficking
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.
Straw Purchasing a Firearm
The government may call a transaction a straw purchase when it believes the person at the counter was not the firearm’s true purchaser. What looked like a simple favor, gift, or shared shopping trip may be scrutinized through purchase records, ATF Form 4473, and the federal straw purchasing statute.
Questions that may determine whether the transaction was lawful include:
- Whose money funded the transaction
- Who chose the specific gun
- What the purchaser intended when completing the sale
- Whether the weapon was bought as a legitimate gift
- Whether the buyer knew the recipient could not lawfully possess it
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.
Federal Firearms Trafficking Charges
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 Information Given to a Licensed Gun Dealer
A mistake on firearm paperwork is not necessarily a federal crime. Under 18 U.S.C. § 922(a)(6), the government must generally show that the accused knowingly provided false information about something that mattered to the dealer’s decision.
The disputed answer may concern:
- The identity of the actual purchaser
- A prior criminal conviction
- Controlled substance use
- A domestic violence conviction or restraining order
- Immigration or citizenship status
- Residence or identification 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.
Federal Charges Involving an Altered Firearm Serial Number
A damaged or missing serial number can create separate federal exposure. Under 27 CFR § 478.34, the government may prosecute certain knowing possession, transportation, or receipt of a firearm with altered identifying marks.
Important questions may include:
- How obvious the serial number damage was
- Whether the markings remained readable
- Whether forensic specialists can restore or identify the number
- Whose fingerprints, DNA, or other evidence connect the weapon to
The alleged alteration can affect more than guilt or innocence. It may also support an enhancement when the sentencing guidelines are calculated.
Homemade and Privately Assembled Firearms
Not every homemade firearm violates federal law. The legal trouble often comes from who possessed it, whether it was made or sold as part of a business, whether required markings were present, or whether the gun was tied to separate criminal conduct.
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
Unserialized firearms may bring an additional sentencing problem, particularly when the federal guidelines call for an enhancement.
Federal National Firearms Act Charges
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.
The Act covers categories such as:
- 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”
Federal agents may bring NFA charges when they believe a regulated item was never registered, was made or transferred without approval, or had required markings removed. The potential consequences include substantial fines, forfeiture, and up to a decade in federal custody.
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 Firearm Charge | Potential Penalty |
|---|---|
| Possessing a gun or ammunition while federally prohibited | Up to 15 years in many cases, with a 15-year mandatory floor when ACCA applies |
| Using, carrying, or possessing a gun in furtherance of another federal crime | Mandatory minimum of five years, seven years if brandished, or 10 years if discharged, generally served consecutively |
| Straw purchasing under 18 U.S.C. § 932 | Potentially 15 years in federal prison, or 25 years when the alleged circumstances involve certain intended serious crimes |
| Trafficking firearms to prohibited or unlawful recipients | A possible sentence of as much as 15 years |
| Selling guns as a business without an FFL | Generally up to five years in federal prison |
| Making false statements during a firearm purchase under § 922(a)(6) | Up to 10 years in federal prison |
| Federal charges involving an altered firearm serial number | Generally up to five years in federal prison, with possible sentencing enhancements |
| Offenses involving unregistered or unlawfully transferred NFA weapons | Up to 10 years in federal prison, fines, and firearm forfeiture |
| Unlawful possession, receipt, or transfer of a machine gun | Often up to 10 years, with substantially greater exposure when connected to a drug trafficking crime or crime of violence |
The final sentencing picture is assembled from several moving parts. The charge itself matters, but so do the quantity and characteristics of the firearms, the defendant’s record, any required minimum term, and the guideline calculations used in federal court.
Prison is only one possible consequence of a federal firearm conviction. A sentence may also involve:
- Substantial fines
- Supervised release after imprisonment
- Forfeiture of firearms, ammunition, money, vehicles, or other property
- Loss of firearm rights
- Restrictions on employment, housing, and professional licensing
- Immigration consequences for noncitizens
The number announced in court matters. Federal prisoners do not have access to conventional parole, and good-time reductions are limited, so the sentence served is usually close to the sentence ordered.
The Armed Career Criminal Act
The Armed Career Criminal Act can turn an already serious prohibited-person case into one with a 15-year mandatory minimum. The law is often referred to by its initials, ACCA.
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.
Whether a prior conviction qualifies is frequently disputed. Courts must analyze the statute underlying the earlier conviction, the available court records, and evolving federal case law. The label placed on a state offense does not always determine whether it counts under the ACCA.
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
When three qualifying convictions are required, knocking out one may knock out the entire 15-year mandatory minimum. That can completely reshape the sentencing landscape.
How Sentencing Enhancements Can Increase a Federal Gun Sentence
Even when no statutory mandatory minimum applies, the United States Sentencing Guidelines may significantly increase the recommended sentencing range.
Federal prosecutors may seek sentencing increases based on allegations such as:
- Multiple firearms
- Stolen firearms
- Firearms with altered, obliterated, or missing serial numbers
- Trafficking or transferring firearms to prohibited persons
- Possession of a machine gun, silencer, destructive device, or other NFA weapon
- Possession or use of a firearm in connection with another felony
- Reckless endangerment during flight
- A leadership or organizational role
- Obstruction of justice
The sentencing guidelines are advisory, but federal judges must calculate and consider them. Defense counsel can challenge enhancements, present mitigating evidence, seek departures or variances, and argue that the recommended range is greater than necessary.
When Should You Hire a Federal Gun Charges Lawyer in Louisiana?
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.
Common signs that federal authorities may be building a case include:
- Federal agents ask to interview you
- Your home, vehicle, or business is searched pursuant to a warrant
- A friend, family member, or coworker is served with a subpoena
- Investigators seize guns, electronic devices, documents, or financial records
- You receive a target letter from federal prosecutors
- Someone allegedly connected to the investigation is arrested
- Your state criminal case suddenly stalls or disappears without explanation
- You hear that the U.S. Attorney’s Office is reviewing the matter
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.
Call Combs Waterkotte About Your Federal Gun Case
Combs Waterkotte defends clients from Louisiana 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.
Every case is prepared with the possibility of trial in mind. We examine the government’s evidence piece by piece, challenge illegal searches, test the reliability of witnesses, and oppose sentencing enhancements that the facts or law do not support.
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 Louisiana federal firearm defense lawyer.

