It had a weight of about 340 grams when empty and a weight of 900 grams when full. The length was about 12.7 centimetres and the diameter was about 10.2 centimetres. The most common explosive used in the Gammon Grenade was Composition C, a plastic explosive developed by Great Britain. The thing that differentiated the Gammon Grenade from other grenades was that the type of explosive and the amount of explosive could be changed depending on the situation.