Federal gun charges in St. Petersburg, FL 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.
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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Combs Waterkotte defends people in St. Petersburg, FL facing high-stakes federal investigations and prosecutions throughout the United States. Our St. Petersburg, FL federal criminal defense lawyers examine how the firearm was discovered, whether prosecutors can prove knowing possession, whether the weapon was connected to another alleged crime, and whether law enforcement violated your constitutional rights.
You should not wait for an indictment to start protecting yourself. If ATF agents have contacted you, you have received a federal target letter, or you believe an arrest or charge is on the horizon, call (314) 900-HELP or contact Combs Waterkotte online. Early decisions often set the board for everything that follows.
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This guide addresses:
- How firearm allegations enter the federal system
- Steps to take when ATF or federal prosecutors are investigating you
- The gun crimes most often charged in federal court
- How mandatory prison terms and guideline enhancements work
- When the Armed Career Criminal Act may apply
- Why early legal representation matters
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When Does a Firearm Case Become Federal?
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 jurisdiction may arise when:
- A firearm traveled through interstate or foreign commerce
- The accused is legally prohibited from possessing firearms or ammunition
- A firearm was allegedly used during a drug trafficking crime or crime of violence
- The case involves firearm trafficking, smuggling, straw purchasing, or unlicensed dealing
- The weapon is a machine gun, silencer, short-barreled rifle, short-barreled shotgun, or destructive device
- The firearm had an altered or removed serial number
- The alleged conduct occurred on federal property or involved a federal investigation
- Federal agents believe the firearm is connected to organized criminal activity
By the time a person learns about the investigation, agents may already have collected surveillance footage, phone records, social media posts, witness statements, firearm traces, and forensic evidence.
What Should You Do If You’re Under Investigation for a Federal Gun Crime in St. Petersburg, FL?
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:
- Stop talking and call a federal firearms lawyer in St. Petersburg, FL. You are not required to answer questions simply because an agent sounds friendly or says the conversation is informal. Your right to remain silent exists before an arrest, not just after one.
- Do not expand the search for them. If agents present a warrant, remain calm and do not obstruct them. However, you do not have to volunteer access to additional rooms, devices, vehicles, accounts, or property that the warrant does not cover.
- Save everything. Preserve purchase paperwork, receipts, messages, photographs, transfer records, emails, and anything else that may provide context. Deleting material can create a separate problem and may be portrayed as obstruction.
- Keep the case off the group chat. Do not post online, compare stories with witnesses, or discuss details over calls and text messages. The government may later obtain those communications.
- Bring in counsel early. A federal criminal defense attorney in St. Petersburg, FL can deal directly with investigators, assess your exposure, and help prevent avoidable damage before charges are filed.
Types of Federal Gun Charges in St. Petersburg, FL
Possession of a Firearm by a Prohibited Person
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.
Prohibited persons may include:
- A criminal record involving an offense punishable by more than one year
- An active fugitive status
- Alleged unlawful controlled-substance use
- Certain restraining orders involving an intimate partner or child
- A qualifying domestic violence conviction
- Particular immigration classifications or a dishonorable military discharge
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.
A gun does not necessarily have to be found in someone’s hand or clothing. Prosecutors may allege:
- Direct or actual possession: Agents or officers claim the weapon was in the person’s hand, pocket, waistband, bag, or immediate physical custody.
- Constructive possession: Prosecutors claim the person was not holding the gun but knew it was present and could control what happened to it.
A gun found under the same roof is not automatically possessed by everyone inside. When several people use the home, vehicle, room, or container where the weapon was recovered, the government’s control-and-knowledge theory may be open to challenge.
Federal Gun Enhancements for Drug and Violent Offenses
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:
- Five years or more when a firearm was possessed, used, or carried
- Seven years or more when the weapon was allegedly displayed or brandished
- Ten years or more when the gun was fired
- Substantially greater exposure for specially regulated firearms and devices
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.
Federal Straw Purchase Charges
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.
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
These cases leave a digital and documentary trail. Prosecutors may rely on Form 4473, receipts, cash transfers, text conversations, security footage, firearm tracing records, and interview statements to argue who the real buyer was.
Federal Firearms Trafficking Charges
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.
Conduct that may lead to a federal trafficking charge includes firearms being:
- Supplying guns to prohibited recipients
- Moving firearms across state lines as part of a broader operation
- Providing weapons for alleged drug trafficking or violent conduct
- Using several purchasers to avoid detection
- Operating what prosecutors view as an unlicensed resale business
- Sending firearms outside the United States unlawfully
Selling Guns Without a Federal Firearms License
An individual may lawfully make some private firearm sales without becoming a licensed dealer. Problems arise when federal agents believe the person crossed from disposing of personal property into running a gun business without the required federal firearms license.
To argue that someone was acting as a dealer, the government may look at:
- The volume and regularity of transactions
- How long the accused kept each firearm before selling it
- Whether buyers were solicited through websites, forums, or personal networks
- Cash, electronic payments, and customer conversations
- Whether the sales produced or were intended to produce profit
- Evidence of inventory, repeat customers, or ongoing operations
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.
The disputed answer may concern:
- 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
A discrepancy is not the end of the story. Defense counsel may argue that the accused misunderstood the question, relied on incorrect information, did not knowingly lie, or gave an answer that did not affect whether the firearm could be sold.
Possessing a Gun With a Removed Serial Number
Federal law restricts the knowing possession, receipt, or transportation of certain firearms whose serial numbers have been changed, removed, or made unreadable. The relevant regulation appears at 27 CFR § 478.34.
The serial number itself is only part of the case. Other issues include:
- 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
Even when it is not charged as a separate count, a defaced serial number may be used to push the recommended federal sentence higher.
“Ghost Gun” Investigations
A privately made firearm is not automatically illegal simply because an individual assembled it. Criminal exposure may arise depending on:
Criminal exposure may arise depending on:
- Who possessed the firearm
- How it was manufactured
- Whether it was transferred or sold
- Whether the accused was acting as a firearms manufacturer or dealer
- Whether required markings were missing
- Whether the firearm was connected to other illegal conduct
Unserialized firearms may bring an additional sentencing problem, particularly when the federal guidelines call for an enhancement.
National Firearms Act Violations
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-regulated firearms include:
- Fully automatic firearms and machine guns
- Rifles with barrels or overall lengths below federal limits
- Short-barreled shotguns
- Firearm silencers and suppressors
- Explosive or other qualifying destructive devices
- Weapons falling within the federal “any other weapon” category
Charges may involve possessing an unregistered weapon, illegally manufacturing or transferring one, or possessing a firearm with required identifying information removed. A conviction can carry up to 10 years in federal prison, fines, and forfeiture.
Federal Firearm Sentences in St. Petersburg, FL
Federal firearm penalties depend on the specific statute, the type of weapon, the accused’s criminal history, whether another offense was involved, and how the United States Sentencing Guidelines apply.
| Charge or Allegation | Possible Federal Sentence |
|---|---|
| Possession by a prohibited person under 18 U.S.C. § 922(g) | Ordinarily punishable by as much as 15 years; the Armed Career Criminal Act may require at least 15 years for qualifying defendants |
| Possessing, carrying, or using a firearm during a drug trafficking crime or crime of violence under § 924(c) | 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 | Potentially 15 years in federal prison, or 25 years when the alleged circumstances involve certain intended serious crimes |
| Federal gun trafficking under § 933 | A possible sentence of as much as 15 years |
| Selling guns as a business without an FFL | Typically punishable by up to five years |
| Knowingly providing material false information to a licensed firearm dealer | Up to 10 years in federal prison |
| Knowing possession of a gun with a removed or changed serial number | A possible five-year sentence plus additional guideline consequences |
| Federal charges involving silencers, short-barreled firearms, machine guns, or other NFA items | Up to 10 years in federal prison, fines, and firearm forfeiture |
| Possessing or transferring a prohibited automatic weapon | Often up to 10 years, with substantially greater exposure when connected to a drug trafficking crime or crime of violence |
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:
- Large financial penalties
- A term of federal supervised release following incarceration
- Seizure and forfeiture of guns, ammunition, cash, vehicles, and other alleged proceeds or instrumentalities
- Permanent or long-term restrictions on possessing firearms
- Barriers involving jobs, housing opportunities, and professional credentials
- Removal, inadmissibility, or other immigration problems for noncitizens
There is no traditional parole in the federal system. Limited good-time credit may reduce an eligible person’s release date, but most of the sentence pronounced by the judge will still have to be served.
The 15-Year Armed Career Criminal Enhancement
The Armed Career Criminal Act, commonly called the ACCA, can transform a felon-in-possession case into one carrying a mandatory minimum sentence of 15 years.
ACCA may apply to a person convicted under 18 U.S.C. § 922(g) who has three qualifying prior convictions involving violent felonies, serious drug crimes, or some combination of the two, so long as the offenses occurred on different occasions.
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.
A St. Petersburg, FL federal firearms attorney may dispute:
- The government’s classification of the prior offense
- Ambiguities in charging documents, plea agreements, or judgments
- Whether multiple convictions arose from a single criminal episode
- The present legal status of an old conviction
- Restoration of rights under state or federal law
An ACCA case can hinge on a single prior offense. If one conviction does not qualify, the mandatory minimum may no longer apply, potentially removing years from the defendant’s exposure.
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 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.
Common signs that federal authorities may be building a case include:
- 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 St. Petersburg, FL
Combs Waterkotte defends clients from St. Petersburg, FL 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.
If federal agents are investigating you or charges have already been filed, now is the time to protect yourself. Contact Combs Waterkotte online or call (314) 900-HELP to speak with an experienced federal gun charges attorney serving St. Petersburg, FL.
