California Code, Penal Code - PEN § 33210

Except as expressly provided in Sections 33215 to 33225, inclusive, and in Chapter 1 (commencing with Section 17700) of Division 2 of Title 2, and solely in accordance with those provisions, no person may manufacture, import into this state, keep for sale, offer for sale, give, lend, or possess any short-barreled rifle or short-barreled shotgun. Nothing else in any provision listed in Section 16580 shall be construed as authorizing the manufacture, importation into the state, keeping for sale, offering for sale, or giving, lending, or possession of any short-barreled rifle or short-barreled shotgun.