When federal prosecutors add a gun charge in South Carolina, the stakes can climb fast. A case that was already serious may suddenly carry mandatory incarceration, consecutive sentencing, property forfeiture, and permanent limits on firearm ownership. These prosecutions are often built by the ATF and the U.S. Attorney’s Office alongside allegations of federal drug crimes, conspiracy, robbery, or violent conduct.
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 South Carolina, 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 South Carolina and across the country, and our South Carolina federal defense lawyers investigate the search, the alleged possession, the firearm’s ownership, the surrounding circumstances, and every possible constitutional violation.
Federal cases often take shape quietly, long before charges appear on a docket. If you have been arrested, contacted by ATF, warned that you are under investigation, or received a target letter, call (314) 900-HELP or contact our firm online. The earlier the defense gets involved, the more room there may be to influence what comes next.
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This page covers:
- 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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Why Are Some Gun Charges Prosecuted Federally?
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:
- The firearm crossed state lines or otherwise moved through interstate commerce
- The person accused falls within a federally prohibited category
- The gun was allegedly connected to drug trafficking or a violent offense
- Investigators suspect straw purchases, illegal dealing, smuggling, or trafficking
- The weapon is regulated under federal law, such as a machine gun, suppressor, short-barreled firearm, or destructive device
- The serial number was allegedly altered, removed, or obliterated
- The conduct occurred on federal land or drew the attention of a federal task force
- Agents claim the firearm was tied to a gang, criminal organization, or broader conspiracy
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.
Under Federal Gun Investigation in South Carolina? Take These Steps
An arrest is not the starting line of a federal gun case. ATF agents may already have reviewed records, interviewed witnesses, traced firearms, and gathered digital evidence before they ever contact you. The decisions you make at that point can either protect your position or hand the government more ammunition.
Take the following steps as soon as you suspect a federal firearms investigation:
- Stop talking and call a federal firearms lawyer in South Carolina. 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 South Carolina can deal directly with investigators, assess your exposure, and help prevent avoidable damage before charges are filed.
Types of Federal Gun Charges in South Carolina
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:
- Individuals with certain felony or felony-level convictions
- People accused of fleeing to avoid prosecution
- People considered unlawful users of illegal drugs or other controlled substances
- Individuals covered by certain domestic protection orders
- People convicted of qualifying misdemeanor domestic violence crimes
- Some noncitizens and former service members who received dishonorable discharges
A conviction ordinarily requires more than showing that a gun was nearby. The government generally must prove knowing possession and that the accused knew they belonged to the category that prohibited possession.
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.
Firearm Charges Connected to Drug Trafficking or Violent Crime
A firearm allegation can become its own criminal count when it is tied to certain drug or violent offenses. Under 18 U.S.C. § 924(c), prosecutors may charge a person with using or carrying a gun during a qualifying offense or possessing one to advance that offense.
A § 924(c) sentence is generally stacked on top of the punishment for the underlying crime rather than served at the same time:
- 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:
- Drugs or suspected drugs
- Cash allegedly connected to sales
- Scales, containers, or packaging materials
- Phones, notebooks, or transaction records
- Additional evidence of an alleged trafficking operation
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.
Questions that may determine whether the transaction was lawful include:
- 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
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
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:
- Purchased for prohibited persons
- Moved across state or international borders
- Sold to people involved in drug trafficking or violent crime
- Acquired through multiple straw purchasers
- Resold without a required license
- Smuggled into another country
Selling Guns Without a Federal Firearms 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.
There is no single fact that settles the issue. Investigators may review:
- 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
A knowingly false answer given during a firearm transaction can lead to federal charges under 18 U.S.C. § 922(a)(6) if the information mattered to whether the dealer could lawfully complete the sale.
Alleged false statements may involve:
- 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
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.
Defaced or Obliterated Firearm Serial Numbers
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.
Defense counsel may examine:
- Whether the alteration was visible or known to the accused
- Whether the serial number was legally “removed, obliterated, or altered”
- What laboratory testing reveals about the original markings
- Whether prosecutors can prove knowing possession of that specific gun
An altered serial number may also increase the recommended sentence under the federal sentencing guidelines.
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.
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.
National Firearms Act Violations
A firearm that is lawful in one configuration can fall under much stricter rules after certain modifications. The National Firearms Act governs several categories of weapons and devices through registration, taxation, transfer, and manufacturing requirements.
The Act covers categories such as:
- Machine guns
- Short-barreled rifles
- Short-barreled shotguns
- Silencers and suppressors
- Destructive devices
- Certain weapons classified as “any other weapon”
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.
Potential Punishment for Federal Weapons Offenses in South Carolina
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.
| Federal Gun Offense | Possible Federal Sentence |
|---|---|
| Unlawful firearm possession by a prohibited person under § 922(g) | Generally up to 15 years in federal prison; qualifying Armed Career Criminal Act cases carry a mandatory minimum of 15 years |
| Possessing, carrying, or using a firearm during a drug trafficking crime or crime of violence under § 924(c) | At least five years, increased to seven for brandishing or 10 for discharge; the sentence usually runs after the underlying sentence |
| Straw purchasing under 18 U.S.C. § 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 |
| Unlawful transportation or transfer of firearms | A possible sentence of as much as 15 years |
| Operating as an unlicensed firearms dealer | Generally up to five years in federal prison |
| Making false statements during a firearm purchase under § 922(a)(6) | Potential imprisonment for up to 10 years |
| Possessing a firearm with an altered or obliterated serial number under § 922(k) | Up to five years in many cases, with further sentencing exposure through an enhancement |
| National Firearms Act violations | As much as 10 years of imprisonment along with fines and forfeiture |
| Unlawful possession, receipt, or transfer of a machine gun | Up to a decade in many cases, before accounting for mandatory consecutive time or other charges tied to the weapon |
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.
Additional penalties and long-term consequences may 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
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.
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.
Prior convictions do not count merely because prosecutors call them violent or serious. Courts may need to dissect the elements of the earlier statute, examine a limited set of judicial records, and apply federal appellate and Supreme Court decisions that continue to shape ACCA law.
Defense counsel may attack the enhancement by examining:
- Whether the earlier conviction legally qualifies as a violent felony or serious drug offense
- Whether the permitted court records prove the necessary version of the offense
- Whether the prior crimes were truly committed on separate occasions
- Whether any conviction was overturned, set aside, expunged, or invalidated
- Whether firearm rights or other civil rights were restored
The math is unforgiving: the government needs three qualifying predicates. A successful challenge to even one of them may be the difference between an ordinary § 922(g) sentence and at least 15 years in federal prison.
Federal Guideline Enhancements for Gun Charges
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:
- 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 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?
If ATF agents or federal prosecutors are looking at your case, early legal representation can matter. You do not have to wait until you are arrested, indicted, or standing in court before contacting an attorney.
Common signs that federal authorities may be building a case include:
- ATF, FBI, DEA, or task force agents attempt to question you
- Agents execute a search warrant at your home or business
- Someone close to you receives a subpoena
- Law enforcement seizes firearms, phones, computers, or records
- You receive a federal target letter
- A codefendant or alleged associate is arrested
- A state firearm case is dismissed or delayed without explanation
- You learn that federal prosecutors are reviewing your case
An early defense strategy is often very different from a trial strategy. Before an indictment, counsel may be able to communicate with federal agents, protect you from making damaging statements, investigate the facts, analyze search and seizure issues, and provide prosecutors with information that could influence charging decisions.
Contact Combs Waterkotte About Federal Gun Charges in South Carolina
Combs Waterkotte defends clients from South Carolina 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.
When negotiations make sense, we negotiate from a position of strength. When they don’t, we are prepared to take your case to court.
From investigating the government’s theory to preparing for appeal, our team is equipped for the full life of a federal firearm case. Clients benefit from decades of combined experience, dedicated investigative support, and a record of defending people facing life-changing criminal accusations.
If you are under investigation or have been charged with a federal gun offense, don’t wait to protect your rights. Contact us online or call (314) 900-HELP today to discuss your case with an experienced South Carolina federal gun charges lawyer.
