The prototype of this grenade is comprised of the body of the smoke hand grenade 39 with a synthetic resin adapter to hold the B. Z. E. igniter. The Model 41 is of similar construction but the body has been modified so that the igniter fits into a small central neck without the use of an adapter. There are only two smoke holes instead of eight. The friction igniter operates with a 4-5 second delay, setting off a 2-minute smoke discharge.
| Overall length | 4.7 ins. | |
| Maximum diameter | 2.3 ins. | |
| Color | Olive drab | |
| Total weight | 21 ozs. | |
| Filling | (HC) type mixture. Zinc and Hexachiorethane | |
| Igniter | B. Z. E. | |
| Delay | ||
| N4 Ignition tube | 4-5 sec. |
German: p. 323