These devices, beautifully lathe-turned from brass, are "torpedoes", designed to be charged with shaped-charges of high explosives, such as TNT, and then fired from Philippine .38" and .50" (9 & 12.5 mm) caliber CO2 rifles, such as the specimen to the left. When he left several different versions of these rifles at our office, the factory representative presented us with these specimens. He also had some, which he took with him for trials with a relative in Southern California, that were already charged. When we asked him how he brought them, when he flew in, he replied: "In my vest pocket"!. Talk about airport security!
There are both .38" and .50" caliber torpedoes here, some with round heads for surface detonation, others with pointed heads for deep detonation. He indicated that they use them for killing animals up to the size of water buffaloes. But, he added, the problem is that they may blow away "one-quarter" of the water buffalo"!