Among the measures is one that would outlaw the future sale of semi-automatic rifles with detachable magazines. The restriction would prevent quick reloading by requiring bullets to be loaded one at a time.
Lawmakers also want to make some prohibitions apply to current gun owners, not just to people who buy weapons in the future.
Like New York, California also would require background checks for buying ammunition and would add to the list of prohibited weapons.
Those buying ammunition would have to pay a fee and undergo an initial background check by the state Department of Justice, similar to what is required now before buyers can purchase a weapon. Subsequent background checks would be done instantly by an ammunition seller checking the Justice Department's records.
The legislation also would ban possession of magazines holding more than 10 bullets, even by those who now own them legally. All weapons would have to be registered.