NFL offensive linemen bang heads all the time. A trio of Dallas Cowboys linemen are now professional head-bangers, too.

Leonard Davis, Marc Colombo and Cory Procter have signed a recording contract as part of a heavy metal band called Free Reign. Their debut album for Australia's Riot Entertainment will be released this fall.

Considering all three players weigh over 300 pounds, it only makes sense they are being referred to as "heavier than metal."

"Free Reign is a band with massive potential," Riot owner John Howarth said in a news release Tuesday. "There has been an enormous buzz surrounding them since they appeared on the scene a few months ago. Free Reign has already been flooded with endorsements. Their marketing potential is limitless. These guys are already huge sports stars, but they have shown they have the talent to diversify."

Guitarist Justin Chapman is the fourth member of the group. Their final gig of the offseason is Saturday at the House of Blues in Dallas.

Riot also has signed the group Fozzy, which includes professional wrestler Chris Jericho.

Copyright 2009 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.