"21 Guns" is a song by American rock band Green Day. It was released as the second single from their eighth album, 21st Century Breakdown. The single was released through Reprise Records on May 25, 2009 as a digital download and July 14, 2009 as a CD single. The song has been a success on the Billboard Hot 100 chart, peaking at No. 22, which has become their highest charting single since 2005. It was nominated for a Grammy for Best Rock Performance by a Duo/Group with Vocals and Best Rock Song in 2010. "21 Guns" has sold over 2,151,000 copies as of December 2011.