The Redskins have signed free agent offensive lineman Mike Williams, the team announced on Friday.

In addition, the Redskins have released punter Dirk Johnson.

Williams, 29, is a 5-year NFL veteran who has played for the Buffalo Bills and Jacksonville Jaguars.

He has played both tackle and guard in his career. He was listed as 6-6 and 360 pounds when he last played in the NFL in 2006.

Williams entered the league in 2002 with the Bills as the fourth overall selection in the NFL Draft.

He has struggled with injuries during his career, including a sore back that limited him in his final year in Buffalo.

In 2006, he signed with the Jaguars but was placed on injured reserve when the back injury re-surfaced.

Overall, Williams has played in 51 career NFL games, with 47 starts.

Williams, a native of Dallas, has been residing in Northern Virginia in recent weeks and reportedly has been training with Derrick Dockery.

Williams and Dockery were teammates at the Unversity of Texas from 1999-2001.

Johnson, a seven-year NFL veteran, had signed with the Redskins on March 5.

His departure leaves the Redskins with one punter on the roster--untested rookie Zac Atterberry.

In an interview on ESPN 980 on Friday, Jim Zorn said the team would sign free agent punter Hunter Smith, formerly of the Indianapolis Colts. The Redskins are expected to announce the move in the coming days.