Washington (CNN) Pro-gun safety organization Brady: United Against Gun Violence endorsed former Vice President Joe Biden for president Sunday, citing his "deep and consistent commitment to ending gun violence in the United States."

The endorsement -- only the second the group has issued in a presidential primary -- provides Biden with a key marker to contrast himself with Vermont Sen. Bernie Sanders on the issue of gun safety, something he's placed an increased focus on as the pair competes for the Democratic presidential nomination.

"At a time when our politics are polarized and people are looking for answers, Joe Biden can break through the division and deliver real change. He has proven that he understands that gun violence affects every community and person," Brady President Kris Brown said in a statement.

"There is no other candidate in this race with his record and his commitment to ending gun violence."

Biden's gun control plan, which he released in October , aims to tackle urban gun violence with an eight-year, $900 million program that would go toward efforts to combat shootings in 40 cities with the highest rates of gun violence.

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