Most defendants charged with a serious crime in California focus almost entirely on the underlying charge. That is understandable. But in cases where a firearm was involved, the sentencing exposure often has less to do with the base offense than with the enhancement sitting on top of it. California law lets prosecutors attach additional prison time based specifically on how a firearm was used, and those additions can run for 10, 20, or 25 years to life, all served after the base sentence finishes.
People facing gun charges in San Bernardino frequently do not understand how the math on their case actually works until they are well into it. Knowing the difference between the underlying offense and the enhancement is the starting point for understanding what you are actually facing, and it is the first thing our criminal defense law firm works through when we take on one of these cases.
What a Firearm Enhancement Is
A firearm enhancement is a sentencing add-on that attaches to an underlying criminal charge when the prosecution can show a firearm was used, displayed, or discharged during the crime. It does not replace the underlying sentence. It stacks on top of it, and in most cases, it must be served consecutively, meaning it runs after the base sentence is completed, not at the same time.
California uses two primary statutes here. Penal Code 12022.5 applies when a person personally uses a firearm during a felony, adding 3, 4, or 10 years. PC 12022.53 is the heavier statute, the one courts call the "10-20-life" law, and it applies to a specific list of serious felonies where the level of involvement with the firearm determines how much time gets added.
How the 10-20-Life Law Actually Works
PC 12022.53 works in three tiers. Personal use of a firearm during a qualifying serious felony: 10 years added. Personal discharge of a firearm: 20 years added. Personal discharge causing great bodily injury or death: 25 years to life added. Every one of those additions is consecutive to the base term.
The numbers add up fast. A robbery conviction under PC 211 carries a base term of 2, 3, or 5 years. Attach a PC 12022.53 enhancement and that case becomes a 12-to-15-year matter at minimum. For homicide charges in San Bernardino, the enhancement can push the total sentence into territory that effectively becomes a life term regardless of the underlying charge. Results vary by case. Past outcomes do not guarantee future results.
What the Prosecution Has to Prove
The prosecution must prove every element of the enhancement beyond a reasonable doubt, the same standard as the underlying charge. For PC 12022.53, that means proving not just that a firearm was present, but that this specific defendant personally used or discharged it. In multi-defendant cases, that "personal use" requirement matters a great deal. One co-defendant's use of a firearm does not automatically extend the enhancement to everyone else at the scene.
Tammy Higgins has tried more than 100 jury trials, including homicide cases, which are exactly the cases where these enhancements carry the highest stakes. In our trial preparation on serious felonies, we look specifically at whether the evidence actually supports personal use versus mere proximity, whether the firearm was real and functional as the statute requires, and whether any witness placing the defendant with the weapon holds up under cross-examination.
Challenging the Evidence That Supports the Enhancement
When we review a case involving a firearm enhancement, two areas get the most attention. The first is how law enforcement connected this particular defendant to the specific use or discharge of the firearm. Witness testimony, physical evidence, and statements made before an attorney was present are the three most common sources, and each has its own vulnerabilities. Statements given without proper Miranda advisement may be suppressible. Witness accounts get tested on cross-examination. Physical evidence gets examined for what it actually proves and what it does not.
The second is the search that produced the firearm or the related evidence. Fourth Amendment problems in how law enforcement conducted the search can affect the enhancement evidence just as they affect the underlying charge. An unlawful traffic stop, a search that exceeded a warrant's scope, or consent obtained under coercive circumstances can each be the basis for a suppression motion. In our work handling criminal defense in San Bernardino across Fontana, Ontario, Rialto, and Colton, unlawful search issues come up regularly in these cases, and they can change the entire picture when they succeed.
Striking the Enhancement at Sentencing
California's 2018 amendment to PC 12022.53(h) gave courts discretion to strike or dismiss firearm enhancements in the interest of justice. Before that change, most of these enhancements were mandatory regardless of the circumstances. A judge had no authority to depart from them. The amendment changed that, and it applies retroactively to some cases.
Tammy Higgins spent 16 years as a San Bernardino County public defender before opening this firm. She handled cases in front of the same judges and alongside the same prosecutors she faces in private practice today. That familiarity with how specific courts weigh sentencing arguments shapes how we write and present sentencing briefs when an enhancement is on the table. We prepare detailed, fact-specific arguments for why striking is appropriate, covering the defendant's background, the specific facts of the offense, and the proportionality question directly.
Resentencing for People Already Serving Enhancement-Based Sentences
For people currently serving time on a sentence that included a firearm enhancement, the post-conviction options are real and worth examining. The 2018 change to PC 12022.53(h) applied retroactively to some cases, and resentencing under AB 600 allows petitions to recall and resentence when the original sentence is no longer proportional under current law.
Sentences imposed under the old mandatory framework, when courts had no choice but to stack them regardless of circumstances, may now be eligible for reconsideration. If you or a family member is serving time that includes a firearm enhancement, that case may be worth a full review. We handle post-conviction relief alongside active defense for clients across the areas we serve in San Bernardino County, Los Angeles County, and Orange County.
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