Barnet have completed the double signing of defender Barry Fuller and midfielder Curtis Weston, both on free transfers.
Fuller, 27, joins as a free agent after Gillingham did not offer him a new contract at the end of last season.
It will be the former Charlton man's second spell at Underhill having enjoyed a loan period during the 2005/06 season.
He will be joined by former Gills team-mate Weston, who was also released at the end of last season.
The former Leeds and Millwall winger made over 140 appearances for Martin Allen's side scoring 15 goals.
Both players have signed in time to eligible for Tuesday's Capital One Cup tie with Birmingham.