"As of January 1, 2001, no handgun may be manufactured within California, imported into California for sale, lent, given, kept for sale, or offered/exposed for sale unless that handgun model has passed firing, safety, and drop tests and is certified for sale in California by the Department of Justice. Private party transfers, curio/relic handguns, certain single-action revolvers, and pawn/consignment returns are exempt from this requirement."
Essentially, the California Handgun Roster is a certified list of handguns on the California Department of Justice's website that specifies what handguns can be manufactured in California, imported, sold, purchased, or lent. It is a comprehensive selection of handguns that comply with California's laws and policies. It also details what changes or modifications can be made to certain firearms without causing them to violate the manufacturing portion of these regulations.
For a detailed list of handguns on the California Roster please visit the Handguns Certified for Sale on the State of California Department of Justice's Webpage.
Additional information on the Roster of Certified Handguns can be found at California Code of Regulations, title 11, section 4070.