Talk:Mk 19
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The MK 19 was developed using the 40mm M203 round, and it was being developed during the early '90's as far as I know. The M203 grenade launcher was developed during the Vietnam War. — Preceding unsigned comment was added by 2602:302:D91:FAC9:24A3:262C:5A6D:FAAD (talk) 14:03, 24 May 2022 (UTC)