This grenade consists of a tubular steel body containing an explosive filler of penthrite wax, a detonator, a direct action nose fuze, a delay friction igniter, and a base assembly containing a self-destroying system. A diaphragm near the bottom of the grenade is threaded centrally to receive the friction igniter. The fuze and base assemblies are not integral parts of the grenade, but are screwed into the nose and base respectively. If the nose fuze does not function properly, the grenade is self-destructive. On firing, the flash from the propelling cartridge enters a hole in the base closing plug and ignites a 6.5 second delay pellet contained in a brass holder. This fires the friction igniter which, gives an additional delay of 4.5 seconds before setting off the detonator. The grenade may also be used as a hand grenade by removing the base assembly and pulling a cord attached to the friction igniter.
| Overall length | 5.5 ins. | |
| Maximum diameter | 1.2 ins. | |
| Color | Black body; aluminum fuze and base | |
| Total weight | 9 ozs. | |
| Explosive filler | PETN/Wax | |
| Weight of filler | 1.1 oz. | |
| Maximum range | 550 yds. | |
| Delay | Self-destroying—11 sec. | |
| Friction igniter—4.5 sec. | ||
| Impact—No delay |
German: p. 317