A Los Angeles gun buyback that offered gift certificates for people who turn in guns netted 2,062 weapons over the weekend, including 91 assault rifles and a black Uzi machine pistol with a massive silencer, L.A. police said.

A covert operations weapon exchanged in Mission Hills was one of dozens of weapons turned in at six locations in the city as part of the third annual gun buyback program.

Officers saw everything from Tommy guns to vintage WWII rifles dumped into collection barrels and traded for gift certificates to various stores.

Weapons could be turned in anonymously, with no questions asked, in exchange for up $100 in gift certificates for handguns, shotguns and rifles and up to $200 for assault weapons.

The buyback netted 953 handguns, 688 rifles, 330 shotguns and 91 assault-style rifles, according to the Los Angeles Police Department.

The initial buyback in 2009 collected 1,696 guns. The 2010 drive collected 2,511 weapons, including a grenade launcher. Unless found to be stolen, the weapons are destroyed.