Introduced in the late 1990s by Argentine firearms manufacturer Bersa, S.A., the Thunder 380 is a lightweight, relatively small semi-automatic pistol series chambered in the popular .380 ACP caliber. A number of military and law enforcement forces have included Bersa 380's in their tables of equipment, including the Ecuadorian Air Force. The Thunder 380 bears a loose resemblance to the Walther PPK, but is sold for about half the price and is rounder where the PPK is more angular.