MDL, I knew I'd find it. It's under the 2001 Dangerous Weapons Control Law, Article 2. It reads as follows:
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ARTICLE 2. UNLAWFUL ACTIVITIES
12280. (a)(1) Any person who, within this state, manufactures or causes to be manufactured, distributes, transports, or imports into the state, keeps for sale, or offers or exposes for sale, or who gives or lends any assault weapon, except as provided by this chapter, is guilty of a felony, and upon conviction shall be punished by imprisonment in the state prison for four, six, or eight years.
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One of the exceptions is a follows:
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(p) Subdivisions (a) and (b) shall not apply to the possession and importation of an assault weapon into this state by a nonresident if all of the following conditions are met:
(1) The person is attending or going directly to or coming directly from an organized competitive match or league competition that involves the use of an assault weapon.
(2) The competition or match is conducted on the premises of one of the following:
(i) A target range that holds a regulatory or business license for the purpose of practicing shooting at that target range.
(ii) A target range of a public or private club or organization that is organized for the purpose of practicing shooting at targets.
(3) The match or competition is sponsored by, conducted under the auspices of, or approved by, a law enforcement
agency or a nationally or state recognized entity that fosters proficiency in, or promotes education about, firearms.
(4) The assault weapon is transported in accordance with Section 12026.1 or 12026.2.
(5) The person is 18 years of age or over and is not in a class of persons prohibited from possessing firearms by virtue of Section 12021 or 12021.1 of this code or Section 8100 or 8103 of the Welfare and Institutions Code.
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Now, I'm no lawyer, so your best bet would be to contact the Kali DOJ for clarification!
-Red-