Following a year marked by a series of mass shootings, voters on Tuesday approved Proposition 63, which toughens California’s already strict gun control laws.

The initiative outlaws the possession of ammunition magazines that hold more than 10 rounds, requires background checks for people buying bullets, makes it a crime not to report lost or stolen guns, and provides a process for taking guns from people upon their conviction for a felony.

The measure was proposed by Lt. Gov. Gavin Newsom, who late Tuesday called the vote “historic progress to reduce gun violence.”

“It was a repudiation of the National Rifle Assn. and the gun lobby. They lost badly,” Newsom said in an interview. “It’s a very important initiative because I think it’s the beginning of a national debate on relinquishment (by felons) and ammunition background checks that will I think will have a very significant impact on reducing gun violence in this country.”

Click here to read the full story on LATimes.com.