The speargun is specialized in the leisure diving and submarine fishing for shooting fish. With double-decked barrel, the inner layer is the aluminum, the outer layer is plastic, on the barrel there is the trough for leading dart, the unique design conforms to the kinesiology to grip and the butt, the meutral buoyancy installment enables you to be allowed to adjust angle of the fishing gun, is easier to hit the goal, even if a primary also hit the target.