California’s AB-1263, which took effect on January 1, 2026, redefines what counts as a “firearm accessory” under state law. The bill expands the definition to include tools, parts, and even digital files that could be used to modify, maintain, or assemble a firearm. That means items like multi-tools with punch pins, trigger locks, or barrel cleaning rods (often tossed in gloveboxes for convenience) are now regulated. If you’re pulled over and an officer finds one of these five items without proper documentation or storage, you could face civil penalties or criminal charges.
