Federal gun charges in Phoenix, AZ 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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A federal gun case can be built on assumptions that deserve to be challenged. Combs Waterkotte defends clients in Phoenix, AZ and across the country, and our Phoenix, AZ federal defense lawyers investigate the search, the alleged possession, the firearm’s ownership, the surrounding circumstances, and every possible constitutional violation.
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 page covers:
- What gives the federal government authority over a firearm case
- What not to do when you learn you are under investigation
- Which federal gun charges prosecutors commonly file
- How consecutive sentences and enhancements can increase prison exposure
- Why the Armed Career Criminal Act can change the entire case
- How a federal gun charges lawyer can intervene
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How Federal Jurisdiction Applies to Gun Cases
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.
A gun case may draw federal attention when:
- 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
Federal agents rarely start from zero when they make contact. Before you realize a case exists, they may already have video footage, digital communications, witness interviews, firearm tracing records, and laboratory evidence in hand.
How to Protect Yourself During an ATF Investigation in Phoenix, AZ
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.
Protect yourself by doing the following:
- Stop talking and call a federal firearms lawyer in Phoenix, AZ. 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 Phoenix, AZ can deal directly with investigators, assess your exposure, and help prevent avoidable damage before charges are filed.
Federal Weapons Charges You May Face in Phoenix, AZ
Unlawful Firearm Possession Under 18 U.S.C. § 922(g)
Under 18 U.S.C. § 922(g), several categories of people are prohibited from possessing firearms or ammunition.
A person may be legally barred from possessing a gun or ammunition because of:
- 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
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.
Possession may be:
- 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.
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.
Using, Carrying, or Possessing a Gun Under 18 U.S.C. § 924(c)
18 U.S.C. § 924(c) makes it a separate federal offense to use or carry a firearm during and in relation to a qualifying crime of violence or drug trafficking crime, or to possess one in furtherance of such a crime.
Because these penalties are typically consecutive, the firearm count can add the following time after the sentence for the underlying crime:
- 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
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:
- 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
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.
These cases may depend on:
- Who paid for the firearm
- Who selected the firearm
- The buyer’s intent at the time of purchase
- Whether the firearm was intended as a lawful gift
- What the purchaser knew about the eventual recipient
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.
Illegal Gun Trafficking
Under 18 U.S.C. § 933, federal prosecutors may pursue trafficking charges when they believe someone knowingly moved, received, or transferred firearms headed for unlawful possession or use.
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
Dealing Firearms Without a Federal 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.
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
Federal Charges for False Firearm Purchase Statements
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.
Examples of information prosecutors may claim was falsified include:
- 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
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.
Possessing a Gun With a Removed 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:
- Knowledge of the damaged serial number
- The degree and legal significance of the alteration
- Whether experts can recover the firearm’s identifying information
- Whether the gun was actually possessed or controlled by the accused
An altered serial number may also increase the recommended sentence under the federal sentencing guidelines.
Federal Charges Involving Privately Made 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.
A privately made firearm case may turn on:
- The accused person’s legal ability to possess guns
- Whether the firearm was assembled lawfully
- Any later sale, transfer, or distribution
- Evidence of commercial manufacturing or dealing
- Missing, incomplete, or altered identifying marks
- An alleged connection to trafficking, drugs, or violent crime
Sentencing enhancements may also apply in some cases involving firearms without required serial numbers.
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.
NFA rules may apply to:
- 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
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.
Penalties for Federal Gun Charges in Phoenix, AZ
There is no universal sentence for a federal gun conviction. Prison exposure can change based on the charge, the firearm involved, prior convictions, any connection to another alleged crime, and the calculation required by the federal sentencing guidelines.
| Charge or Allegation | Maximum or Mandatory Penalty |
|---|---|
| Possession by a prohibited person under 18 U.S.C. § 922(g) | A possible 15-year maximum, unless qualifying prior convictions trigger the Armed Career Criminal Act’s mandatory minimum |
| Firearm possession or use connected to a drug trafficking crime or crime of violence | A consecutive mandatory term beginning at five years and increasing based on how the firearm was allegedly used |
| Federal straw purchase allegations | As much as 15 years, with enhanced exposure of up to 25 years in qualifying aggravated cases |
| Trafficking firearms to prohibited or unlawful recipients | A possible sentence of as much as 15 years |
| Dealing firearms without a required federal license | A possible federal sentence of as much as five years |
| Lying about material information during a federally regulated gun sale | 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 |
| Illegal possession, manufacture, or transfer of an NFA-regulated firearm | Potentially a decade in federal custody, plus monetary penalties and seizure of the firearm |
| Illegal machine gun possession or transfer | 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:
- 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
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 enhancement may apply when a person convicted under 18 U.S.C. § 922(g) has three qualifying prior convictions for violent felonies, serious drug offenses, or both, committed on occasions different from one another.
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.
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
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 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:
- The quantity of firearms involved
- Whether any firearm was stolen
- Defaced or missing identifying markings
- Transfers to prohibited persons or alleged trafficking schemes
- Possession of specially regulated NFA firearms or devices
- A connection between the firearm and separate felony conduct
- Reckless behavior during an attempted escape
- An alleged leadership or supervisory role
- Conduct the government claims obstructed the investigation or prosecution
Federal judges are not required to impose the guideline sentence, but they must begin by calculating it. A defense lawyer can object to enhancements, develop mitigation, seek a downward variance or departure, and explain why a shorter sentence is sufficient under the law.
When Should You Hire a Federal Gun Charges Lawyer in Phoenix, AZ?
You should contact a federal defense lawyer in Phoenix, AZ as soon as you believe an investigation may involve you. You do not need to wait for an arrest or indictment.
Possible indicators of a federal investigation 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
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 Phoenix, AZ
Federal firearm cases move quickly and carry enormous consequences. Combs Waterkotte represents people in Phoenix, AZ and nationwide, drawing on the insight of former prosecutors who understand federal investigations, charging decisions, and courtroom strategy.
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.
When negotiations make sense, we negotiate from a position of strength. When they don’t, we are prepared to take your case to court.
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.
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 Phoenix, AZ.

