California Code, Penal Code - PEN § 29615

(a) The minor is accompanied by a parent or legal guardian, and the minor is actively engaged in, or is in direct transit to or from, a lawful, recreational sport, including, but not limited to, competitive shooting, or agricultural, ranching, or hunting activity or hunting education, or a motion picture, television, or video production, or entertainment or theatrical event, the nature of which involves this use of a firearm.

(b) The minor is accompanied by a responsible adult, the minor has the prior written consent of a parent or legal guardian, and the minor is actively engaged in, or is in direct transit to or from, a lawful, recreational sport, including, but not limited to, competitive shooting, or agricultural, ranching, or hunting activity or hunting education, or a motion picture, television, or video production, or entertainment or theatrical event, the nature of which involves the use of a firearm.

(c) The minor is at least 16 years of age, the minor has the prior written consent of a parent or legal guardian, and the minor is actively engaged in, or is in direct transit to or from, a lawful recreational sport, including, but not limited to, competitive shooting, or agricultural, ranching, or hunting activity or hunting education, or a motion picture, television, or video production, or entertainment or theatrical event, the nature of which involves the use of a firearm.

(d) The minor has the prior written consent of a parent or legal guardian, the minor is on lands owned or lawfully possessed by the parent or legal guardian, and the minor is actively engaged in, or is in direct transit to or from, a lawful, recreational sport, including, but not limited to, competitive shooting, or agricultural, ranching, or hunting activity, or a motion picture, television, or video production, or entertainment or theatrical event, the nature of which involves the use of a firearm.

(e) The minor possesses, with the express permission of their parent or legal guardian, a firearm, other than a handgun or semiautomatic centerfire rifle, and both of the following are true: