<Dd> (B) A pistol grip that protrudes conspicuously beneath the action of the weapon, thumbhole stock, or vertical handgrip . </Dd> <Dd> (7) A semiautomatic shotgun that has the ability to accept a detachable magazine . </Dd> <Dd> (8) Any shotgun with a revolving cylinder . </Dd> <P> In addition, (Penal Code § 12001.5) bans, by definition, short - barreled shotguns and short - barreled rifles . Defined in Penal Code § 12020; a short - barreled shotgun is defined as a firearm (designed, redesigned, or altered) to fire a fixed shotgun shell and has a barrel or barrels of less than 18 inches or an overall length of less than 26 inches . A short - barreled rifle is defined as a semiautomatic, center fire rifle with a barrel length of less than 16 inches or an overall length of less than 26 inches . </P>

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