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California Penal Code 25105: Key Defenses to Unsafe Firearm Storage Charges

Posted by Bulldog Law | Dec 28, 2025

California's evolving firearm storage laws present complex challenges for gun owners and their attorneys. Penal Code Section 25105, which becomes operative on January 1, 2026, provides crucial exceptions to the state's unsafe firearm storage penalties under Section 25100. Understanding these exceptions and how to effectively utilize them in defense strategies becomes essential for protecting clients facing these serious charges that could result in both criminal liability and civil consequences.

Overview of California's Firearm Storage Framework

The relationship between Penal Code Sections 25100 and 25105 creates a comprehensive framework governing firearm storage responsibilities in California. While Section 25100 establishes criminal liability for unsafe storage when children gain access to firearms, Section 25105 provides specific circumstances where such liability does not apply. This exception-based structure requires defense attorneys to thoroughly understand both the general rule and the specific defenses available to their clients.

The upcoming implementation date of January 1, 2026, gives gun owners and their attorneys time to prepare for these new legal requirements. However, the complexity of the statutory framework demands careful analysis of each exception and its practical application in real-world scenarios. Defense attorneys must be prepared to argue these exceptions effectively while understanding how prosecutors will likely interpret and challenge them.

Exception for Illegal Entry by Third Parties

The first exception under subdivision (a) protects gun owners when children obtain firearms "as a result of an illegal entry to any premises by any person." This exception recognizes that gun owners should not face criminal liability when criminals break into their homes or property to access stored firearms. However, the scope of this exception requires careful analysis in each case.

Defense attorneys must establish the causal connection between the illegal entry and the child's access to the firearm. This requires documenting evidence of forced entry, security measures that were in place, and the timeline of events. The exception may not apply if the illegal entry was facilitated by inadequate security or if the firearm was left in an obviously accessible location despite the break-in.

The phrase "any person" broadens this exception beyond adult burglars to include situations where other children illegally enter the premises. This could encompass scenarios involving trespassing minors who then provide access to firearms for other children. Defense attorneys should investigate the circumstances surrounding any unauthorized entry and document how it directly led to the child's access to the weapon.

Practical considerations include examining home security systems, door and window locks, alarm systems, and any evidence of tampering or forced entry. Witness testimony about unusual activity in the neighborhood or previous break-in attempts can strengthen the defense under this exception.

Secure Storage Requirements and Compliance

Subdivision (b) provides an exception when firearms are "securely stored as defined in Section 25145." This exception requires defense attorneys to thoroughly understand the specific requirements for secure storage under California law. The definition in Section 25145 establishes precise standards that gun owners must meet to qualify for this protection.

Secure storage typically involves using appropriate locking devices, gun safes, or other mechanisms that prevent unauthorized access. However, the specific requirements can be technical and may vary depending on the type of firearm and storage location. Defense attorneys must carefully examine the storage methods used by their clients and document compliance with statutory requirements.

The burden of proof regarding secure storage often falls on the prosecution to demonstrate that storage was inadequate. However, defense attorneys should proactively gather evidence of proper storage, including receipts for security devices, photographs of storage arrangements, and expert testimony about industry standards for firearm security.

Manufacturing specifications, installation requirements, and proper usage of security devices all become relevant evidence. Defense attorneys should also consider whether any defects in security equipment or improper installation by third parties contributed to the child's access to the firearm.

Lawful Control and Authorized User Exception

The exception under subdivision (c) applies when firearms are "carried or readily controlled by the lawful owner or another lawful authorized user." This exception recognizes that gun owners cannot be held liable for unsafe storage when they maintain direct control over their firearms. However, the scope of "readily controlled" requires careful interpretation.

Defense attorneys must establish what constitutes adequate control in various situations. Physical possession clearly qualifies, but the exception may also apply when gun owners maintain close supervision over stored firearms. The proximity of the gun owner to the firearm, their awareness of its location, and their ability to prevent unauthorized access all factor into this analysis.

The concept of "lawful authorized user" extends this exception to situations involving other responsible adults who have been given authority to control the firearm. This could include family members, security personnel, or others specifically authorized by the gun owner. Defense attorneys must document the authorization and ensure that the authorized user meets all legal requirements.

Practical applications of this exception might include situations where gun owners are briefly separated from their firearms while maintaining visual contact or immediate access. However, the exception likely does not apply during extended absences or when gun owners cannot reasonably monitor access to their weapons.

Law Enforcement and Military Exception

Subdivision (d) provides an exception for peace officers and military personnel when children obtain firearms "during or incidental to the performance of the person's duties." This exception recognizes the unique responsibilities and circumstances faced by law enforcement and military personnel in their professional capacities.

The scope of "performance of duties" extends beyond active duty time to include situations that are incidental to official responsibilities. This might encompass circumstances where officers are required to maintain access to firearms for emergency response or when military personnel must transport weapons as part of their assignments.

Defense attorneys representing law enforcement or military clients should document the official nature of the circumstances surrounding the incident. Duty schedules, official assignments, emergency response requirements, and departmental policies all become relevant evidence. The exception may also apply to situations involving training exercises, transport of official weapons, or emergency situations requiring immediate access to firearms.

However, this exception likely does not extend to personal firearms owned by law enforcement or military personnel when they are acting in purely personal capacities. Defense attorneys must carefully distinguish between official and personal circumstances when invoking this exception.

Self-Defense and Defense of Others Exception

The final exception under subdivision (e) applies when children obtain or discharge firearms "in a lawful act of self-defense or defense of another person." This exception recognizes that criminal liability should not attach when children access firearms to protect themselves or others from immediate threats.

The lawfulness requirement means that the self-defense or defense of others must meet all legal standards for justified use of force. Defense attorneys must establish that the child faced an imminent threat, that the force used was reasonable and proportionate, and that no other alternatives were available.

Documentation of the threatening circumstances becomes crucial. Police reports, witness statements, medical records, and any available video evidence can help establish the legitimacy of the child's defensive actions. The timing and nature of the threat, the child's reasonable perception of danger, and the proportionality of the response all factor into this analysis.

This exception may also apply when children discharge firearms to protect family members, friends, or even strangers from criminal attacks. However, the defense must establish that the child's actions were objectively reasonable under the circumstances and that the use of force was legally justified.

Strategic Considerations for Defense Attorneys

Defending against unsafe firearm storage charges under these new provisions requires proactive preparation and thorough investigation. Defense attorneys should immediately secure evidence related to any applicable exceptions, including photographs of storage arrangements, security device documentation, and witness statements about the circumstances of the incident.

Expert testimony may be crucial for establishing compliance with secure storage requirements or demonstrating that the defendant's actions fell within recognized exceptions. Firearms experts, security specialists, and law enforcement professionals can provide valuable insights about industry standards and reasonable practices.

The timing of the January 1, 2026 implementation date provides an opportunity for gun owners to ensure compliance with the new requirements. Defense attorneys should counsel clients about proper storage methods and documentation practices that could protect them from future liability.

Conclusion

California Penal Code Section 25105 provides important protections for gun owners facing unsafe storage charges, but these exceptions require careful legal analysis and strategic application. Understanding the specific requirements for each exception and gathering appropriate evidence becomes essential for effective defense representation.

The complexity of these provisions underscores the importance of experienced legal counsel for anyone facing firearm storage charges. With proper preparation and strategic use of available exceptions, many cases can be successfully defended or resolved favorably for gun owners who find themselves charged under California's evolving firearm storage laws.
At Bulldog Law evaluate your case, break down your options, and map out a strategy to fight your charges. Call (888) 928-1609 or send our team an email to schedule a confidential consultation.

About the Author

Bulldog Law

Bulldog Law is a dedicated criminal defense, personal injury, and cryptocurrency dispute resolution firm with licensed attorneys and experienced support staff across California. Our team of trial attorneys, paralegals, and legal professionals brings decades of combined experience handling complex state and federal matters  including serious felonies, DUI, domestic violence, special education law, employment disputes, and high-stakes crypto fraud recoveries. We pride ourselves on thorough case preparation, aggressive advocacy, and personalized client service. Every blog post is researched and reviewed by members of our legal team to provide practical, up-to-date information for individuals and businesses facing legal challenges. If you need trusted legal representation or have questions about your case, contact Bulldog Law today at (888) 928-1609 for a confidential consultation. Offices throughout California including Glendale, Sacramento, San Francisco, San Diego, and more.

We offer criminal defense, immigration, personal injury and cryptocurrency legal services in both English and Spanish. Call us at (888) 928-1609 for a free consultation.


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