Federal Gun Charges in San Diego: How Much Prison Time Can You Face?

Posted on: September 24th, 2026 by Dod Ghassemkhani, ESQ

Federal Gun Charge Penalties

A gun arrest in San Diego doesn’t always stay in San Diego Superior Court. When a firearms case is picked up by federal prosecutors, the rules change completely: mandatory minimum sentences, no parole, and prison terms that must be served almost in full. Knowing what you’re up against early can make a significant difference in how your case turns out.  Learn more about federal gun charge penalties.

Below, Dod Law explains how federal gun charges are penalized, why so many San Diego cases end up in federal court, and what defense options may be available.

When Does a Gun Case Become Federal?

A firearms case becomes federal when it involves a federally prohibited person, interstate commerce, federal property, or a link to another federal crime such as drug trafficking. Cases can also start in state court and be referred to federal prosecutors, often through joint work between local police and the ATF.

San Diego’s location on the border makes federal involvement especially common. The U.S. Attorney’s Office for the Southern District of California actively pursues cases tied to cross-border gun trafficking, drug operations, gang activity, and untraceable “ghost guns.” A defendant who expected to face a state misdemeanor or wobbler can suddenly be looking at years in federal prison.

How Do Mandatory Minimums Apply to Federal Gun Charges?

Under 18 U.S.C. § 924(c), using or carrying a firearm in connection with a crime of violence or drug trafficking triggers mandatory prison time that must run on top of the sentence for the underlying crime:

• 5 years for possessing the firearm
• 7 years if the firearm is brandished
• 10 years if the firearm is discharged
• 25 years for a second § 924(c) conviction

A judge cannot go below these floors because of personal history, family obligations, or other mitigating circumstances. Generally, the only route beneath a mandatory minimum is a government motion recognizing the defendant’s substantial assistance to prosecutors. And because federal prison has no parole, defendants typically serve at least 85% of the sentence imposed.

Penalties for Common Federal Firearms Offenses

Offense	Statute	Maximum Penalty
Prohibited person in possession	18 U.S.C. § 922(g)	15 years
Straw purchase / false statement	18 U.S.C. § 922(a)(6)	10 years
Armed Career Criminal Act	18 U.S.C. § 924(e)	15-year minimum, up to life
NFA violations (silencers, short-barreled rifles, machine guns)	26 U.S.C. § 5861	10 years
Obliterated serial number	18 U.S.C. § 922(k)	5 years
Dealing without a license	18 U.S.C. § 922(a)(1)	5 years

The “prohibited person” category is broader than many people realize. It includes convicted felons, people convicted of domestic violence misdemeanors, unlawful drug users, people under certain restraining orders, and individuals unlawfully in the country. The Armed Career Criminal Act applies when someone with three or more qualifying prior convictions for violent felonies or serious drug offenses is found with a firearm. Whether each prior actually qualifies is often heavily contested.

Can an Old California Conviction Make Gun Possession a Federal Crime?

Yes. Any prior conviction punishable by more than one year makes a person federally prohibited from possessing firearms, even if the sentence actually served was shorter. This frequently affects Californians with wobbler offenses that were charged as felonies.

An expungement under California Penal Code § 1203.4 does not restore federal gun rights. Someone who believes their record was cleared can still be prosecuted for owning a firearm.

There is an important safeguard, however. Under Rehaif v. United States (2019), prosecutors must prove the defendant knew they belonged to a prohibited category. That requirement can form the basis of a real defense.

How Are Federal Gun Sentences Calculated?

Beyond mandatory minimums, judges rely on the U.S. Sentencing Guidelines (USSG § 2K2.1). The calculation starts with a base offense level, adjusted for factors like a stolen firearm, the number of weapons, or use in another felony. That level is then paired with the defendant’s criminal history category to produce a range in months.

The guidelines are advisory, and judges may impose a lower sentence based on the factors in 18 U.S.C. § 3553(a). Making that argument effectively requires a strong command of federal sentencing practice.

What Defenses Are Available?

Common defense strategies in federal gun cases include:

• Fourth Amendment challenges: If the gun was found through an unlawful stop or search, the evidence may be suppressed.
• Knowledge-of-status defenses: Under Rehaif, the government must prove the defendant knew they were prohibited.
• Challenging prior convictions: Contesting whether earlier offenses qualify for ACCA or other enhancements.
• Second Amendment challenges: Following NYSRPA v. Bruen (2022), some federal gun laws face constitutional challenges, though United States v. Rahimi (2024) upheld the domestic violence restraining-order ban.

Facing Federal Gun Charges in San Diego? Act Now!  Call Dod Law

Federal firearms cases move fast, and decisions made in the first few days can shape everything that follows. If you or someone you love is under investigation or has been charged, contact Dod Law to review the facts of your case and understand your options.  Dod Law serves San Diego and Southern California helping clients defend against federal gun charge penalties.

Frequently Asked Questions 

Disclaimer: The information provided in this blog is intended for general informational and educational purposes only and should not be construed as legal advice. Reading this article does not create an attorney-client relationship with Dod Law or Dod Ghassemkhani, Esq. Every criminal case is unique, and the laws, legal principles, and procedures discussed may not apply to your specific circumstances.

You should not act upon or rely on any information contained in this article without first consulting a qualified criminal defense attorney regarding your particular situation. If you have been arrested, are under investigation, or are facing criminal charges in San Diego County and Southern California, contact Dod Law to schedule a confidential consultation with Dod Ghassemkhani, Esq., and receive legal guidance tailored to your case.