Thermal grenade. Two versions of the object included, armed and unarmed state (opened or closed). All quads, can be subdivided easily. Lightwave and OBJ versions have material information.
OBJ (OBJ, filesize: 176 KB), MAX (Autodesk 3ds Max, filesize: 331 KB), LWO (Lightwave, filesize: 158 KB), MA (Autodesk Maya, filesize: 645 KB), BLEND (Blender, filesize: 257 KB)