What Are the Penalties for Federal Gun Charges in San Diego?

Most people charged with a firearms offense in California assume they’re dealing with state court. A judge, a public defender, maybe probation. That assumption can cost years of their life. Federal gun charges operate under an entirely different system, one where mandatory minimums mean the judge’s hands are often tied, parole doesn’t exist, and sentences are served at 85% minimum. No exceptions.

David P. Shapiro Criminal Defense Attorneys helps clients in the Southern District of California navigate federal criminal charges that carry some of the harshest penalties in the justice system. This post breaks down what federal firearms penalties actually look like, which charges carry mandatory minimums, how San Diego’s border proximity shapes enforcement, and where defense opportunities exist.

What Makes a Gun Charge Federal Instead of State?

A firearms offense becomes federal when it involves interstate commerce, a federally prohibited person, federal property, or a connection to another federal crime such as drug trafficking. In San Diego, state-level gun arrests are also routinely “adopted” into the federal system through ATF coordination with local law enforcement, transforming the penalty exposure overnight.

The distinction matters more than most people realize. California state court offers probation options, wobblers, and a parole system with meaningful good-time credits. Federal court offers none of that. The same firearm, the same arrest, the same defendant can face radically different outcomes depending on which courthouse the case lands in.

How Federal Adoption Works in San Diego

Here’s the scenario our attorneys see regularly: someone gets arrested by SDPD on a state weapons charge. Normally, that case goes to San Diego Superior Court. But if the defendant has significant criminal history, or the case involves trafficking or organized activity, local law enforcement can refer it to the ATF and the U.S. Attorney’s Office for federal prosecution. The defendant wakes up one morning facing state charges and goes to bed facing federal mandatory minimums. No one warned them that was possible.

San Diego’s proximity to the Mexican border makes this dynamic especially common. The U.S. Attorney’s Office in the Southern District aggressively prosecutes firearms cases connected to cross-border trafficking, drug operations, gang activity, and ghost gun manufacturing.

How Do Federal Mandatory Minimum Sentences Work for Gun Charges?

Federal mandatory minimums set a sentencing floor that judges cannot go below, regardless of the defendant’s background, family circumstances, or mitigating factors. For firearms offenses under 18 U.S.C. § 924(c), mandatory minimums start at 5 years for possessing a firearm during a crime of violence or drug trafficking offense, increase to 7 years for brandishing, and reach 10 years for discharging the weapon.¹

Those numbers are just the starting point. A second § 924(c) conviction carries a mandatory 25-year consecutive sentence.¹ “Consecutive” is the word that changes everything. That 25 years runs after the sentence for the underlying offense, not at the same time.

The only recognized path below a mandatory minimum is substantial assistance to the government under USSG § 5K1.1, which requires active cooperation with prosecutors.² Judges who believe the sentence is unjust still cannot reduce it without that cooperation motion. This is the fundamental reality of federal firearms prosecution: the penalty structure is designed to eliminate judicial discretion. Understanding how the federal sentencing guidelines work is essential for anyone facing these charges.

What Are the Specific Penalties for Common Federal Gun Charges?

Federal firearms penalties vary significantly by statute, with maximum sentences ranging from 5 years to life imprisonment depending on the offense and the defendant’s criminal history. The most commonly charged offenses in the Southern District of California include felon in possession, straw purchases, and Armed Career Criminal Act enhancements.

Felon in Possession (18 U.S.C. § 922(g))

Being a prohibited person in possession of a firearm carries up to 15 years in federal prison.³ This statute covers not just convicted felons but also domestic violence misdemeanants, unlawful users of controlled substances, persons subject to certain restraining orders, and undocumented individuals.³ The Bipartisan Safer Communities Act of 2022 enhanced penalties for defendants with certain prior convictions.⁴

Straw Purchases (18 U.S.C. § 922(a)(6))

Making false statements to acquire a firearm for someone else carries up to 10 years.³ In our experience, San Diego sees a disproportionate number of straw purchase prosecutions because of southbound firearms trafficking toward the border.

Armed Career Criminal Act (18 U.S.C. § 924(e))

A felon-in-possession charge escalates dramatically when the defendant has three or more prior convictions for violent felonies or serious drug offenses. The ACCA imposes a mandatory minimum of 15 years.⁵ What qualifies as a “violent felony” under ACCA has been the subject of extensive Supreme Court litigation, and our team evaluates every prior conviction to determine whether it actually triggers the enhancement.

Other Federal Firearms Offenses

Dealing firearms without a license under § 923 and possessing a firearm with an obliterated serial number under § 922(k) each carry up to 5 years.³ National Firearms Act violations involving short-barreled rifles, silencers, or machine guns carry up to 10 years under 26 U.S.C. § 5861.⁶

Can a Prior California Felony Make You a Prohibited Person Under Federal Law?

Yes. A conviction for any offense punishable by more than one year of imprisonment makes a person a prohibited person under 18 U.S.C. § 922(g)(1), regardless of whether the sentence actually imposed was less than a year.³ This catches many Californians off guard, particularly those convicted of wobbler offenses that were charged as felonies.

Here’s where it gets worse. California’s expungement under Penal Code § 1203.4 does not remove the federal firearms disability.⁷ Someone who had their state felony expunged, who genuinely believes their record is clean, can still be federally prosecuted for possessing a firearm. In our practice across the Southern District, we’ve seen this exact scenario more than once. The client had no idea they were still a prohibited person based on prior representation.

The Supreme Court’s decision in Rehaif v. United States (2019) added one critical protection: the government must prove the defendant knew they belonged to a prohibited category.⁸ This doesn’t mean the defendant needs to know the specific law. But the prosecution must show awareness of the status, such as knowing they had a prior felony conviction, that made possession illegal. That knowledge requirement has become a meaningful defense tool in the right cases.

How Do Federal Sentencing Guidelines Work for Firearms Offenses?

Federal sentencing guidelines under USSG § 2K2.1 establish a recommended sentencing range based on the specific offense conduct and the defendant’s criminal history.² The guidelines are advisory after United States v. Booker (2005), meaning judges can deviate, but they remain the starting point for every federal firearms sentence.⁹

Base Offense Levels

The base offense level for firearms offenses ranges from 6 to 26 depending on the type of weapon, the defendant’s criminal history, and the circumstances of possession.² A prohibited person possessing a single handgun starts at a base level of 14. If the firearm was stolen, add 2 levels. If it was used in connection with another felony, the level climbs further. A semiautomatic weapon capable of accepting a large-capacity magazine pushes the base level higher still.

Criminal History and the Sentencing Table

The guidelines cross-reference the offense level against a criminal history category (I through VI) to produce a sentencing range in months. A first-time offender at offense level 14 faces a guideline range of 15 to 21 months. The same offense level for someone in Criminal History Category VI produces 37 to 46 months. That spread is why criminal history is often the single most impactful variable in federal sentencing.

Departures and Variances

Our attorneys understand that the guideline range is a starting point, not a ceiling or a floor (unless a mandatory minimum applies). Judges can depart downward based on factors under 18 U.S.C. § 3553(a), including the nature of the offense, the defendant’s history and characteristics, and the need to avoid unwarranted sentencing disparities.¹⁰ Advocating effectively for a below-guidelines sentence requires fluency in how these factors interact, something that distinguishes experienced federal practitioners from attorneys who primarily handle state cases.

What Happens When You Face Both State and Federal Gun Charges?

Under the dual sovereignty doctrine affirmed in Gamble v. United States (2019), a person can be prosecuted in both state and federal court for the same conduct without violating double jeopardy.¹¹ This means a single firearms arrest can generate two separate criminal cases with two separate potential sentences.

In practice, the U.S. Attorney’s Office and the local DA typically coordinate to avoid duplicative prosecution. But “typically” is not “always.” When coordination breaks down, or when the federal government wants to make an example, defendants face the nightmare scenario of parallel proceedings. Understanding why a case may be moved to federal court can help defendants prepare for this possibility.

The more common dynamic in San Diego is a choice, not a doubling. The question becomes which system will handle the case. If federal prosecution is pursued, state charges are usually dismissed or held in abeyance. But that decision often happens after the arrest, after the initial state court appearance, and sometimes after the defendant has already made statements or strategic decisions based on the assumption they were in state court. Early involvement of defense counsel who understands both systems is the only way to navigate this transition without making irreversible mistakes.

What Defenses Apply to Federal Gun Charges?

Federal firearms charges can be challenged on constitutional, statutory, and factual grounds. The strongest defenses depend on the specific charge and the circumstances of the investigation, but several categories apply broadly across federal gun cases in the Southern District.

Fourth Amendment Suppression

If the firearm was discovered through an illegal search or seizure, the evidence can be suppressed. Federal courts apply the exclusionary rule, and our team scrutinizes every traffic stop, home search, and consent encounter for constitutional violations. In federal cases, the quality of the suppression motion often determines the outcome of the entire case.

Rehaif Knowledge-of-Status Defense

Since Rehaif, the government must prove the defendant knew they belonged to a prohibited category.⁸ For defendants who genuinely didn’t know their prior conviction qualified as a federal felony, or who believed their rights had been restored, this creates a viable defense.

Second Amendment Challenges Post-Bruen

The Supreme Court’s decision in New York State Rifle & Pistol Ass’n v. Bruen (2022) established a historical-tradition test for firearms regulations.¹² This has generated a wave of as-applied challenges to federal statutes, particularly § 922(g) provisions. While United States v. Rahimi (2024) upheld the domestic violence restraining order prohibition, the broader landscape remains unsettled.¹³ Our attorneys monitor these developments closely because a successful constitutional challenge can eliminate the charge entirely.

Frequently Asked Questions

Can federal gun charges be reduced to a misdemeanor?

No. Federal firearms offenses are classified as felonies, and there is no wobbler equivalent in the federal system. Unlike California state court, where certain weapons charges can be reduced to misdemeanors, federal law does not provide a mechanism for misdemeanor reduction of firearms offenses.

Can a federal firearms conviction be expunged?

Federal expungement is extremely limited. There is no general federal expungement statute comparable to California Penal Code § 1203.4. The only recognized paths are a presidential pardon or, in rare circumstances, a successful post-conviction challenge. Our attorneys advise clients that a federal firearms conviction is, for practical purposes, permanent.

Will a federal gun conviction affect my immigration status?

Federal firearms convictions are typically classified as aggravated felonies under 8 U.S.C. § 1101(a)(43), which makes deportation virtually certain for non-citizens and eliminates most forms of discretionary relief.¹⁴ This consequence applies regardless of the sentence imposed and survives even if the defendant receives probation rather than imprisonment. Those concerned about this intersection should understand what crimes can lead to deportation and consult with an immigration attorney.

How long do federal gun cases take to resolve in San Diego?

Federal cases generally move faster than state cases due to the Speedy Trial Act, which requires trial within 70 days of indictment or initial appearance.¹⁵ In practice, most defendants waive speedy trial rights to allow time for investigation and negotiation. Complex cases involving multiple defendants or cooperating witnesses can take 12 to 18 months or longer to resolve in the Southern District.

Contact David P. Shapiro Criminal Defense Attorneys About Federal Gun Charges in San Diego

Federal firearms charges carry some of the most unforgiving penalties in the criminal justice system. Mandatory minimums, no parole, and sentences served at 85% create a landscape where every decision from the moment of arrest matters. Every case is different, and the right defense strategy depends on the specific charges, the evidence, and the defendant’s history. If you or a loved one is facing federal gun charges in San Diego, contact David P. Shapiro Criminal Defense Attorneys to discuss your situation and understand your options.

References

1. 18 U.S.C. § 924(c) [“Except to the extent that a greater minimum sentence is otherwise provided by this subsection or by any other provision of law, any person who, during and in relation to any crime of violence or drug trafficking crime… uses or carries a firearm, or who, in furtherance of any such crime, possesses a firearm, shall, in addition to the punishment provided for such crime of violence or drug trafficking crime… be sentenced to a term of imprisonment of not less than 5 years.”]

2. U.S. Sentencing Guidelines Manual § 2K2.1 (2024) (Unlawful Receipt, Possession, or Transportation of Firearms or Ammunition).

3. 18 U.S.C. § 922 (Unlawful acts — federal firearms prohibitions, including prohibited persons, straw purchases, and obliterated serial numbers).

4. Bipartisan Safer Communities Act, Pub. L. No. 117-159, 136 Stat. 1313 (2022).

5. 18 U.S.C. § 924(e) [“In the case of a person who violates section 922(g) of this title and has three previous convictions… for a violent felony or a serious drug offense… such person shall be fined under this title and imprisoned not less than fifteen years.”]

6. 26 U.S.C. § 5861 (National Firearms Act — prohibited acts regarding NFA firearms).

7. Cal. Penal Code § 1203.4 (California expungement does not restore federal firearms rights; see United States v. Norbury, 492 F.3d 1012 (9th Cir. 2007)).

8. Rehaif v. United States, 588 U.S. 225 (2019) (holding that the government must prove the defendant knew he belonged to a category of persons barred from possessing a firearm).

9. United States v. Booker, 543 U.S. 220 (2005) (rendering the federal sentencing guidelines advisory).

10. 18 U.S.C. § 3553(a) (Factors to be considered in imposing a sentence).

11. Gamble v. United States, 587 U.S. 678 (2019) (reaffirming the dual sovereignty doctrine).

12. New York State Rifle & Pistol Ass’n, Inc. v. Bruen, 597 U.S. 1 (2022).

13. United States v. Rahimi, 602 U.S. 680 (2024).

14. 8 U.S.C. § 1101(a)(43) (Definition of “aggravated felony” for immigration purposes).

15. 18 U.S.C. § 3161 (Speedy Trial Act — time limits for federal criminal proceedings).