The harpoon tip of underwater weapon comprises a tip body with a threaded or other mounting system as well as one or more means for prey fixation. A striker is mounted on the tip body which has sharp peaks located at both ends of the striker, it is possible to flip the striker inside the body 180 degrees during hunting. The striker is made of a extremely strong hard alloy, substantially of tungsten carbide, titanium carbide or their combination, and the tip body is made of a heavy tungsten-based alloy.