This grenade consists of a thin egg-shaped case filled with an explosive charge, and a friction type igniter with a delay pellet. The upper end of the friction wire in the igniter is attached to a disc in the head which screws on to the top of the body. In operation, the head is unscrewed and pulled, drawing the wire through the friction composition and igniting the delay pellet. After a delay of from 4 to 5 seconds the pellet initiates the detonator which in turn sets off the explosive filler.
This type hand grenade has been used as a booby trap by fitting a non-delay friction igniter which can be identified by its left-hand threads.
| Overall length | 3 ins. | |
| Maximum diameter | 2 ins. | |
| Color | Black body with blue igniter head | |
| Weight of explosive filler | 3.85 oz. | |
| Weight | 12 ozs. | |
| Igniter | B. Z. 39 | |
| Delay | 4-5 sec. |
German: p. 321