A “Gift Cards for Guns” collection event will be held in Prince George’s County on Saturday.

County police will collect firearms in exchange for gift cards valued up to $100.

The event is part of an effort to reduce gun violence in the county, officials said.

The collection will take place from 10 a.m. to 2 p.m. at St. Mark’s United Methodist Church, 601 8th Street, Laurel.

Participants must place any guns, unloaded, in the trunk of their cars. A uniformed police officer at the site will provide further instructions.

The guns do not have to be functional. Ammunition will also be collected, police said.

This is the third “Gift Cards for Guns” event of the year. About 300 guns have been turned in so far, police said.