Federal gun charges in San Francisco, CA 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 San Francisco, CA, those allegations can substantially increase the punishment tied to a separate federal offense.
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Combs Waterkotte represents clients in San Francisco, CA when a federal firearm investigation puts their freedom and future on the line. Our federal criminal defense attorneys serving San Francisco, CA dig into the government’s theory from every angle, including where the gun was found, who allegedly controlled it, how officers obtained the evidence, and whether the weapon had any real connection to another offense.
Maybe agents have already searched your property. Maybe someone close to you has been questioned. Maybe a target letter just landed in your hands. Whatever tipped you off, do not ignore it. Reach out to Combs Waterkotte or call (314) 900-HELP before speaking with investigators or making a move that cannot be undone.
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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:
- Why some gun cases are prosecuted federally instead of by the state
- How to respond if agents, subpoenas, or a target letter signal an investigation
- Possession, trafficking, straw purchase, NFA, and related firearm offenses
- The penalties that can be added to another federal sentence
- How prior convictions can trigger ACCA exposure
- When to bring in a federal firearm defense attorney
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What Makes a Gun Charge Federal?
Not every federal gun case begins with federal agents at the door. Many start as ordinary state arrests before a task force or U.S. Attorney’s Office steps in. That can happen when the alleged conduct fits a federal offense under the Gun Control Act, the National Firearms Act, or another federal firearms law. Once that happens, the case moves onto a very different playing field.
A gun case may draw federal attention when:
- 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
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 San Francisco, CA?
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.
If federal agents may be building a gun case against you:
- Do not speak with federal agents without a federal firearms attorney in San Francisco, CA. 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 San Francisco, CA immediately. Early representation can protect your rights, prevent unnecessary mistakes, and allow your attorney to communicate with investigators on your behalf.
Federal Firearm Offenses Charged in San Francisco, CA
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 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
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.
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.
Federal Gun Enhancements for Drug and Violent Offenses
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:
- 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:
- Illegal drugs
- Cash
- Packaging materials
- Distribution records
- Other alleged evidence of trafficking
Proximity alone may not tell the whole story. The defense may argue that the firearm belonged to someone else, was inaccessible, was present for an unrelated lawful reason, or did nothing to promote the alleged offense.
Federal Straw Purchase Charges
A lawful-looking retail purchase can become a federal case when agents believe the named buyer was only standing in for another person. These straw purchase investigations often center on what the buyer intended and what they reported on Form 4473. Prosecutors may also rely on 18 U.S.C. § 932.
These cases may depend on:
- 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.
Firearms trafficking allegations may involve weapons that were:
- 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
When Private Gun Sales Become Federal Charges
A person regularly buying and selling guns as a business may be required to hold a federal firearms license. Selling a firearm from a personal collection once in a while is not automatically the same thing as operating as a dealer.
To argue that someone was acting as a dealer, the government may look at:
- How many firearms were sold and how often sales occurred
- Whether guns were purchased and quickly resold
- Online listings, advertisements, or social media offers
- Messages with prospective buyers and records of payment
- Whether the person expected to earn money from the transactions
- Whether firearms were kept on hand for future customers
False Information Given to a Licensed Gun Dealer
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.
Federal investigators may focus on statements about:
- Whether the person completing the form was the real buyer
- The existence or nature of a prior conviction
- Illegal drug use or controlled-substance status
- A qualifying domestic violence case or protection order
- Citizenship, immigration, or residency status
- The buyer’s address, identity, or supporting documents
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.
Possession of a Firearm With an Altered or Obliterated 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 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
A firearm with a removed or changed serial number may add another rung to the sentencing ladder through a federal guideline enhancement.
Federal Charges Involving Privately Made Firearms
The label “ghost gun” can make a case sound simpler than it is. A privately assembled firearm may be lawful in some circumstances, while its possession, manufacture, sale, or markings may create federal exposure in others.
The government may try to build its case around:
- Possession by a prohibited person
- The number and type of firearms produced
- Messages or payments showing planned sales
- Whether the accused acted as an unlicensed manufacturer or dealer
- The absence of markings required under federal law
- The use or presence of the firearm during another alleged offense
Even where the firearm itself is not prohibited, the absence of a required serial number may increase the recommended guideline sentence.
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-regulated firearms include:
- 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.
Federal Firearm Sentences in San Francisco, CA
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.
| Charge or Allegation | Potential Penalty |
|---|---|
| Unlawful firearm possession by a prohibited person under § 922(g) | Ordinarily punishable by as much as 15 years; the Armed Career Criminal Act may require at least 15 years for qualifying defendants |
| A § 924(c) firearm charge tied to drug trafficking or a qualifying violent offense | Mandatory minimum of five years, seven years if brandished, or 10 years if discharged, generally served consecutively |
| Misrepresenting the true buyer of a firearm | Potentially 15 years in federal prison, or 25 years when the alleged circumstances involve certain intended serious crimes |
| Federal gun trafficking under § 933 | As many as 15 years behind bars |
| Operating as an unlicensed firearms dealer | Generally a five-year maximum term of imprisonment |
| Making false statements during a firearm purchase under § 922(a)(6) | A maximum sentence of 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 |
| Offenses involving unregistered or unlawfully transferred NFA weapons | Potentially a decade in federal custody, plus monetary penalties and seizure of the firearm |
| Illegal machine gun possession or transfer | 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.
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
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.
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.
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:
- 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.
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.
Federal prosecutors may seek sentencing increases based on allegations such as:
- Large numbers of firearms
- Stolen weapons
- Altered or obliterated serial numbers
- Trafficking-related conduct
- Machine guns, silencers, destructive devices, or similar regulated weapons
- Firearm possession connected to another felony
- Reckless endangerment while fleeing
- Acting as an organizer or leader
- Obstruction of justice allegations
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 to Call a Federal Gun Defense Attorney
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.
You should take the situation seriously if:
- 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.
Speak With a Federal Gun Charges Lawyer in San Francisco, CA
When federal agents and prosecutors are building a gun case, you need counsel familiar with the system from both sides. Combs Waterkotte represents San Francisco, CA clients nationwide, and our attorneys include former prosecutors with firsthand knowledge of how federal cases are developed and litigated.
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.
If a negotiated resolution serves your interests, we pursue it with leverage built through preparation. If the government will not offer a fair outcome, we are ready to litigate the case in court.
Our firm brings decades of combined defense experience, an in-house investigator, and a history of handling severe state and federal allegations. We have the personnel and resources to defend firearm cases at every stage, including investigation, indictment, trial, sentencing, and appeal.
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 San Francisco, CA federal gun charges lawyer.
