1. What Gun Crimes Defense Covers and How Federal Firearms Charges Are Structured
Federal firearms offenses are built around two questions: whether the defendant was a prohibited person, and whether the conduct charged falls within the specific prohibition the statute defines.
Section 922(g) of Title 18 prohibits possession of a firearm by any person convicted of a crime punishable by imprisonment for more than one year, any person with a misdemeanor domestic violence conviction under § 922(g)(9), any person subject to certain domestic violence restraining orders, any person who is an unlawful user of or addicted to a controlled substance, and several other defined categories of prohibited persons. The interstate commerce element is satisfied in virtually every case because federal courts hold that a firearm manufactured in one state and present in another satisfies the nexus requirement. The elements the government must prove for a § 922(g) charge are the prior qualifying conviction or other prohibited status, knowing possession of a firearm or ammunition, the defendant's knowledge of that prohibited status under Rehaif, and the interstate commerce nexus.
State firearms charges operate alongside the federal framework and often target the same conduct. Unlawful possession of a concealed firearm without a permit, carrying in prohibited locations, and possession of prohibited weapon types such as short-barreled rifles or unregistered machine guns are the most commonly prosecuted state charges. The decision whether to prosecute a gun case federally or in state court often turns on the sentence available: federal mandatory minimums under § 924(c) for armed drug trafficking or armed robbery frequently exceed what the state would impose for the same conduct. Federal criminal defense and firearms law practice requires evaluating both federal and state exposure from the same factual pattern before advising on any resolution strategy.
What Felon in Possession Charges Require after Rehaif and How the Knowledge Element Changed
Rehaif v. United States, 588 U.S. 225 (2019), fundamentally changed what the government must prove in a § 922(g) felon in possession case by requiring proof that the defendant knew they belonged to the relevant prohibited category at the time of possession.
Before Rehaif, the government did not need to prove that the defendant knew they were a convicted felon. After Rehaif, the government must prove the defendant knew of the relevant status: for a felon in possession charge, that the defendant knew they had been convicted of a crime punishable by imprisonment exceeding one year. This element creates a genuine defense in cases where the defendant's prior conviction was for an offense whose classification was not obvious, where the defendant received a sentence below one year and may have believed the offense was a misdemeanor, or where the conviction occurred in a foreign jurisdiction with a different classification system.
Rehaif also created post-conviction relief opportunities for defendants who were convicted under jury instructions that did not require the government to prove the knowledge element. A conviction under a pre-Rehaif instruction may be challenged if the defendant can show the error was not harmless, meaning there is a reasonable probability that the outcome would have been different had the jury been required to find that the defendant knew their prohibited status. The argument is strongest for defendants whose prohibited status is more ambiguous, such as unlawful drug users or non-citizen prohibited persons, than for defendants who have received extensive prior warnings about the consequences of possessing firearms as a felon.
2. How the Fourth Amendment Operates in Gun Crimes Defense and When Suppression Ends the Case
A gun that is suppressed before trial is a gun the jury never sees. When the firearm is the only evidence, a successful suppression motion does not just help the defense. It ends the prosecution.
The Fourth Amendment prohibits unreasonable searches and seizures, and any evidence obtained through an unconstitutional search is subject to exclusion under the exclusionary rule. In firearms cases, the most common suppression issues arise from traffic stops where the officer searches the vehicle without probable cause or a valid exception, from stop-and-frisk encounters that lack the reasonable articulable suspicion required by Terry v. Ohio, 392 U.S. 1 (1968), from searches of homes or apartments conducted without a warrant or a recognized exception, and from pat-down searches of pedestrians that exceed the scope justified by the initial encounter. A stop that began unlawfully cannot produce admissible evidence regardless of what the officer found, under the fruit of the poisonous tree doctrine.
The automobile exception allows officers to search a vehicle without a warrant when they have probable cause to believe it contains contraband or evidence of a crime. But probable cause requires more than a hunch, a defendant's nervous demeanor, or presence in a high-crime area. The plain view doctrine allows seizure of contraband that is immediately apparent from a lawful vantage point, but the firearm must actually be visible, not merely suspected to be present. Consent to search eliminates the warrant requirement only if the consent was voluntary and not the product of coercion or a false claim of authority. The specific facts of how the firearm was found, who found it, what the officer knew before the search began, and what the defendant was told before consenting are the factual record on which every suppression motion rises or falls.
How Second Amendment Challenges Work under Bruen and What Rahimi Established
New York State Rifle and Pistol Association v. Bruen established a new framework for evaluating Second Amendment challenges: a firearm regulation is constitutional only if the government can show it is consistent with the Nation's historical tradition of firearm regulation.
Bruen replaced the two-part interest-balancing test that most circuit courts had applied since District of Columbia v. Heller, 554 U.S. 570 (2008). Under Bruen, the government bears the burden of demonstrating that the challenged regulation is rooted in historical tradition. This framework has generated active litigation over whether specific § 922(g) prohibitions survive constitutional scrutiny, particularly as applied to defendants whose prior convictions were for non-violent offenses. Several circuit courts are actively litigating as-applied challenges to § 922(g)(1) by non-violent felons, and the outcomes vary by jurisdiction.
United States v. Rahimi, 602 U.S. 680 (2024), confirmed that Bruen does not require the government to identify a historical twin for each modern regulation. The Court clarified that the government must show a relevant historical analogue consistent with the principles underlying the historical tradition, and upheld § 922(g)(8), which prohibits firearm possession by persons subject to domestic violence civil protective orders, on that basis. Second Amendment challenges remain viable and actively litigated for specific prohibitions and specific defendants, but the post-Rahimi landscape requires a fact-specific historical analogue analysis rather than a broad categorical argument. Second amendment and gun rights litigation post-Bruen requires reviewing the specific prohibition charged, the defendant's circumstances, and the circuit's developing case law before assessing the viability of a constitutional challenge.
The decision whether to contest a gun charge at trial or negotiate a resolution depends heavily on the sentencing consequences if the trial ends in conviction. A defendant facing a § 924(c) charge who goes to trial and loses receives at least five years consecutive to any other sentence, with no parole. A defendant facing ACCA exposure who goes to trial and loses receives at least 15 years regardless of the underlying offense. The potential sentence differential between pleading guilty before trial and being convicted at trial is often measured in years or decades, and that differential is the most important factor in any gun case resolution decision. Criminal defense and trials and criminal defense consultation practice requires quantifying this differential precisely before advising on whether to accept a plea offer, because the suppression motion or trial that fails leaves a mandatory minimum sentence the judge cannot reduce absent a specific statutory mechanism or government motion.
3. What Mandatory Minimums Apply to Gun Crimes and How They Stack
Federal gun crimes carry mandatory minimum sentences that judges generally cannot reduce regardless of the defendant's circumstances or criminal history, and some provisions require that the sentence run consecutively to every other sentence imposed in the same case.
Section 924(c) imposes mandatory minimum sentences for using, carrying, or possessing a firearm in furtherance of a crime of violence or a drug trafficking crime: five years for a first offense, seven years if the firearm was brandished, and ten years if it was discharged. A first § 924(c) conviction carries at least five years consecutive to the underlying sentence. The 25-year enhancement under § 924(c)(1)(C) applies when the § 924(c) violation occurs after a prior § 924(c) conviction has become final, not simply because multiple § 924(c) counts appear in the same indictment. The First Step Act of 2018 changed the stacking rules so that multiple § 924(c) counts in the same case no longer automatically trigger the 25-year enhancement for counts beyond the first unless a prior § 924(c) conviction has already become final.
The Armed Career Criminal Act under § 924(e) imposes a mandatory minimum of 15 years on any defendant convicted of a § 922(g) felon in possession offense who has three prior convictions for violent felonies or serious drug offenses. Johnson v. United States, 576 U.S. 591 (2015), struck down the ACCA's residual clause as unconstitutionally vague, eliminating the broadest pathway for predicate offense designation and creating post-conviction relief for defendants sentenced under that clause. Borden v. United States, 593 U.S. 420 (2021), further held that offenses requiring only reckless mens rea cannot qualify as violent felonies under the ACCA's elements clause. Violent crimes defense and federal drug crime charges paired with firearms allegations require calculating mandatory minimum exposure across all counts before evaluating any plea offer.
| Federal Firearms Charge | Key Elements | Mandatory Minimum | Notes |
|---|---|---|---|
| Felon in possession (§ 922(g)(1)) | Prior felony; knowing possession; knowledge of status (Rehaif); interstate commerce | No federal mandatory minimum; up to 15 years | ACCA applies if 3+ qualifying priors: 15 years |
| Firearm during drug trafficking (§ 924(c)) | Drug trafficking crime; possession in furtherance | 5 years consecutive (brandished: 7; discharged: 10) | 25-year enhancement requires prior § 924(c) conviction that has become final |
| Armed career criminal (§ 924(e)) | § 922(g) conviction + 3 prior violent felonies or serious drug offenses | 15 years | Johnson (2015) eliminated residual clause; Borden (2021) excluded reckless offenses |
| Domestic violence (§ 922(g)(9)) | Misdemeanor DV conviction; knowing possession; knowledge of status | No federal mandatory minimum; up to 15 years | Rahimi (2024) upheld against Second Amendment challenge |
| Gun-free school zone (§ 922(q)) | Possession within 1,000 feet of school; no state permit | Up to 5 years | State law permits may provide a defense |
How Constructive Possession Challenges and Predicate Offense Attacks Reduce Exposure
Two of the most effective gun crimes defenses do not challenge the search, the statute, or the sentence structure. They challenge whether the defendant possessed the firearm at all, and whether the prior convictions driving the sentence actually qualify.
Constructive possession exists when a defendant has dominion and control over a firearm even without physical custody. The government proves constructive possession by showing the defendant had knowledge of the firearm's presence and the ability to exercise control over it. The defense attacks each element: did the defendant actually know the firearm was there, or was it in a location shared with others who had equal or greater access? A firearm found in a vehicle or residence shared with other individuals who could equally have possessed it does not automatically establish the defendant's constructive possession. The government cannot prove constructive possession through proximity alone, and evidence that others had equal access to the location where the firearm was found creates reasonable doubt that the government must overcome with additional specific evidence connecting the defendant to the weapon.
Predicate offense challenges are essential in any case where ACCA exposure is present. After Johnson eliminated the residual clause, the elements clause and the enumerated offense clause are the only remaining pathways for ACCA predicate designation. Challenging whether a prior conviction qualifies under the elements clause requires applying the categorical approach, which compares the elements of the prior offense statute to the ACCA's definition rather than looking at the defendant's actual conduct. A prior conviction for a crime that can be committed recklessly, or that does not require the use of physical force as an element, may not qualify after Borden. Identifying and challenging each alleged ACCA predicate is among the highest-value work in federal gun defense because the difference between ACCA and non-ACCA treatment can be a decade or more of mandatory imprisonment.
4. Frequently Asked Questions about Gun Crimes Defense
Gun crimes defense questions arrive from people charged with felon in possession offenses who want to understand how their prior record affects the sentence they face, from defendants whose firearm was found during a traffic stop and want to know whether the search was lawful, from people facing § 924(c) charges alongside drug counts who want to understand what the mandatory minimums mean in practice, and from defendants with prior convictions trying to understand whether those convictions qualify as ACCA predicates.
What Is Gun Crimes Defense and What Does It Typically Involve?
Gun crimes defense addresses criminal charges arising from the unlawful possession, carrying, use, or transfer of firearms under federal or state law. Federal charges under 18 U.S.C. § 922(g) require the government to prove the defendant was a prohibited person, knowingly possessed a firearm or ammunition, knew of the prohibited status at the time of possession under Rehaif, and that the firearm affected interstate commerce. Defense strategy typically involves evaluating whether the search that produced the firearm was constitutional, whether the defendant's prior record creates prohibited person status, whether the defendant actually possessed the firearm, and whether the mandatory minimum sentencing provisions driving the plea negotiation are correctly calculated.
Can a Gun Charge Be Dismissed If the Police Search Was Unlawful?
Yes. If the firearm was discovered through a search that violated the Fourth Amendment, a motion to suppress can exclude the weapon from evidence. When the firearm is the primary evidence, a successful suppression motion frequently results in dismissal because the government cannot prove possession without it. Common suppression grounds in gun cases include a traffic stop lacking reasonable suspicion, a vehicle search lacking probable cause or a valid exception, a pat-down exceeding the scope of a lawful Terry stop, or a home search conducted without a valid warrant or recognized exception. The viability of the suppression motion depends on the specific facts of how the police encountered the defendant, what they knew before searching, and what legal authority they claimed for the search.
What Is the Mandatory Minimum Sentence for a Federal Gun Charge?
Federal mandatory minimums depend on the specific charge. A basic felon in possession conviction under § 922(g) carries no mandatory minimum but can carry up to 15 years. If the defendant qualifies as an armed career criminal under § 924(e), the mandatory minimum is 15 years. Using or carrying a firearm during a drug trafficking crime or crime of violence under § 924(c) adds at least five years consecutive to any other sentence, seven if brandished, and ten if discharged. The 25-year § 924(c) enhancement applies when the violation occurs after a prior § 924(c) conviction has become final. Mandatory minimums generally bind the sentencing judge unless a specific statutory mechanism or government motion authorizes a sentence below the minimum.
Does the Second Amendment Provide a Defense to a Federal Gun Charge?
After Bruen and Rahimi, Second Amendment as-applied challenges to specific § 922(g) prohibitions are actively litigated in federal courts, but success depends on the specific prohibition charged, the defendant's circumstances, and the circuit in which the case is pending. Bruen requires the government to show that a firearms regulation is consistent with the Nation's historical tradition of firearm regulation. Rahimi clarified that the government need not identify a historical twin but must show a relevant historical analogue consistent with the principles underlying that tradition, and upheld § 922(g)(8) on that basis. Challenges to § 922(g)(1) for non-violent felons have produced conflicting results across circuits. A Second Amendment defense is viable for the right defendant facing the right charge in a jurisdiction with favorable precedent.
09 Jun, 2026
