Type 2 rifle grenade launcher
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||160 mm (6.3 in)||180 mm (7.1 in)|
|96 mm (3.8 in)||107 mm (4.2 in)|
|30 mm (1.2 in)||40 mm (1.6 in)|
|74 mm (2.9 in)|
|Weight||230 g (8.1 oz)||370 g (13 oz)|
|Explosive content||50 g (1.8 oz)||100 g (3.5 oz)|
|Explosive type||50% TNT / 50% RDX|
|Armor penetration||-||100 mm (3.9 in) of mild steel|
- TM-E 30-480, Handbook on Japanese Military Forces. United States War Department.