The bills, which faced opposition from pro-gun activists, were confirmed to have been among dozens signed by Brown on Friday. Brown's office did not issue a statement accompanying the signing.
Among the legislation signed into law was a bill prohibiting Californians with previous convictions for serious domestic violence charges and those who have been hospitalized for mental health issues more than once in one year from making firearm purchases, according to Reuters.
The laws go into effect on Jan. 1, and exempt law enforcement and military service members from the provisions.
“No parent should have to worry that a gun gets in the wrong hands and commits a heinous and violent tragedy on our school campuses,” state Sen. Anthony Portantino (D), who wrote the bill raising the age on rifle and shotgun purchases, told Reuters.