page_title: Mk 20 Mod 0 grenade launcher
hierarchical_section_title: Mk 20 Mod 0 grenade launcher
caption_attribution_description: English: Mk 18 Mod 0 (right &amp; on tripod) &amp; Mk 20 Mod 0 (left) Grenade Launchers at the War Remnants Museum (Ho Chi Minh City)
context_page_description: The Mk 20 Mod 0 was a 40mm automatic grenade launcher manufactured by NOS Louisville and was used by the US Navy during the Vietnam War. It used the Blow-Forward operation that was previously used on semi-automatic pistols such as the Steyr Mannlicher M1894 and Schwarzlose Model 1908. The Mk 20 was eventually replaced by the Mk 19 Mod 3.
context_section_description: The Mk 20 Mod 0 was a 40mm automatic grenade launcher manufactured by NOS Louisville and was used by the US Navy during the Vietnam War. It used the Blow-Forward operation that was previously used on semi-automatic pistols such as the Steyr Mannlicher M1894 and Schwarzlose Model 1908. The Mk 20 was eventually replaced by the Mk 19 Mod 3.
caption: Mk 20 Mod 0 Grenade Launcher (left) at War Remnants Museum (Ho Chi Minh City)
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