Armstrong is 6-3, 220 pounds and in his sixth NFL season out of the University of Miami. Originally signed by the St. Louis Rams as an undrafted free agent in 2013, Armstrong has started 12 of his 69 career games with the Rams, Oakland Raiders, San Francisco 49ers and the New York Giants. He has registered 120 career tackles, five pass breakups, three forced fumbles, three fumble recoveries, three interceptions, two sacks and 29 special teams tackles. This season, he started one of six games for the Giants and totaled 18 tackles on defense and two on special teams, before being waived on Oct. 23. Armstrong is a native of Sanford, Fla. He will wear No 52.