Former gun-toting guard Javaris Crittenton was at the Knicks’ free-agent camp yesterday.

Crittenton, 23, was involved with Gilbert Arenas in the gun-play episode in Washington two years ago. They reportedly drew guns on each other in the Wizards’ locker room and both were suspended by the NBA for the rest of the 2009-10 season.

Crittenton, in a plea agreement, was sentenced to one year of probation and community service for the misdemeanor weapons rap. He played four games for Charlotte last season before being released.

Also on hand was Bonzi Wells, who impressed.