Editor’s note: This story and headline have been updated to correct that the closure of U.S. 34 occurred west of Greeley. A homemade suppressor turned out to be the source of an explosives threat that ...

Silencers, also called suppressors, are tube-shaped devices that, when screwed into the muzzle of a gun, slow the decompression of gases that propel a bullet forward, thus reducing the “pop” sound of ...