For sale is a Defense Technology (Def-Tech) Model 1315 37mm Single Shot Signal Launcher. As expected with its age and service history, it exhibits wear and aging consistent with previous use. This model always exhibits some corrosion in the barrel given the metal type and ammo used back in the day. It functions just fine. One sold on Gunbroker this last weekend for $599. Sedalia. Call or text 66028seven31seven3. Thank you