(a)
Any person who registered a firearm as an assault weapon pursuant to the provisions of law in effect prior to January 1, 2000, where the assault weapon is thereafter defined as an assault weapon pursuant to Section 30515 or former Section 12276.1, as that section read at any time from when it was enacted by Section 7 of Chapter 129 of the Statutes of 1999 to when it was repealed by the Deadly Weapons Recodification Act of 2010, shall be deemed to have registered the weapon for purposes of this chapter and shall not be required to reregister the weapon pursuant to this article.
(b)
Any person who legally registered a firearm as an assault weapon pursuant to the
provisions of law in effect prior to January 1, 2005, where the assault weapon is thereafter defined as a .50 caliber BMG rifle pursuant to Section 30530 or former Section 12278, shall be deemed to have registered the weapon for purposes of this chapter and shall not be required to reregister the weapon pursuant to this article.