Mk 20 Mod 0 grenade launcher

The Mk 20 Mod 0 was a 40mm automatic grenade launcher manufactured by NOS Louisville which was used by the US Navy during the Vietnam War.The Mk 20 was eventually replaced by the Mk 19 Mod 3.It used a blow-forward mechanism that was previously used on semi-automatic pistols such as the Steyr Mannlicher M1894 and Schwarzlose Model 1908.
Strike Assault BoatUS NavyKaren National UnionVietnam WarInternal conflict in MyanmarNOS LouisvilleBarrelCartridgeCaliberActionBlow-forwardRate of fireMuzzle velocityautomatic grenade launcherMk 19 Mod 3Steyr Mannlicher M1894Schwarzlose Model 1908Mk 18 Mod 0 grenade launcherBlow forward firearmsHino Komuro M1908 PistolHIW VSKPancor JackhammerHowa Type 96