Daniel Defense issued a Safety Notification Replacement Campaign on Oct. 8, 2019, for its Delta 5 bolt-action rifles manufactured before Sept. 20, 2019, and released a reminder this month that owners who have not yet checked if their Delta 5 is subject to the announcement should stop using it immediately.https://www.shootingillustrated.com/articles/2020/2/20/daniel-defense-delta-5-rifle-safety-reminder/