The Packers activated Hargrave (knee) off the active/PUP list Sunday, Weston Hodkiewicz of the team's official site reports.
Hargrave returned to practice Sunday after missing training camp with a knee issue. The nose tackle's return means rookie Warren Brinson will likely see fewer snaps. Hargrave's return is a huge boost to the Packers' defensive interior, and the veteran has returned just in time to get some preseason reps.