Barton suffered a toe injury and did not return to Sunday's 20-13 loss to the Lions.
Barton (back) is active for Sunday's game against the 49ers.
Barton (back) is listed as inactive Saturday at Pittsburgh.
Barton was waived by the Raiders on Saturday, Tom Pelissero of NFL Networkreports.
The Raiders signed Barton off of the Giants' practice squad Tuesday, Tom Pelissero of NFL Network reports.
The Giants claimed Barton off waivers from the Chiefs on Sunday, Dan Salomone of the team's official site reports.
The Colts selected Barton in the seventh round of the 2019 NFL Draft, 240th overall.