Type 2 rifle grenade launcher

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A Type 2 rifle grenade launcher, with a 30 mm Type 2 grenade (top), and a large 40 mm Type 2 grenade (bottom).

The Type 2 rifle grenade launcher was an attachment for the Japanese Type 38 and Type 99 rifles that allowed them to fire special hollow charge grenades. It was a version of the German Schiessbecher grenade launcher. Two grenades were produced for the launcher: a 30 mm calibre grenade and a larger 40 mm calibre grenade, both designated Type 2. The launcher sits over the end of the barrel, held in place with a clamping device. A special crimped blank cartridge or wooden bullet is used to fire the grenades.

The rear of the grenades is pre-rifled to mate with the rifling in the launcher. The rifling ensures that the grenade is spun in flight, giving it stability and arming the rotational fuze. Both grenades use a largely identical fuze, which makes up the rear part of the grenade. On impact, momentum carries the striker assembly forward, overcoming the resistant force of a creep spring into the detonator.

30 mm grenade 40 mm grenade
Length 6.4 inches 7.1 inches
Length of
upper body
3.8 inches 4.2 inches
Diameter of
upper body
1.2 inches 1.6 inches
Length of
lower body
2.9 inches
Weight 8.1 ounces 13 ounces
Explosive content 1.76 ounces 3.5 ounces
Explosive type 50% TNT / 50% RDX
Armor penetration - 3.88 inches of mild steel

References[edit]

  • TM-E 30-480, Handbook on Japanese Military Forces. United States War Department. 

See also[edit]