Mk 20 Mod 0 | |
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Mk 20 Mod 0 Grenade Launcher (left) at War Remnants Museum (Ho Chi Minh City) | |
Type | Automatic Grenade Launcher |
Place of origin | United States |
Service history | |
Used by | US Navy |
Wars | Vietnam War |
Production history | |
Manufacturer | NOS Louisville |
Specifications | |
Mass | 26 pounds |
Length | 27 ins |
Barrel length | 12 ins |
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Cartridge | 40x46mm SR |
Action | Blow-forward |
Rate of fire |
Semi-Automatic 250-275 RPM Full Automatic |
Muzzle velocity | 250 feet per second |
Effective firing range | 350m |
Maximum firing range | 400m |
Feed system | 24 round belt |
Sights | Iron |
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.
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The original article can be found at Mk 20 Mod 0 grenade launcher and the edit history here.