Gaztañaga Destroyer was an automatic pistol designed by Isidro Gaztañaga in Eibar, Basque country, in 1913, using 6.35 mm caliber. It was produced in Gaztañaga y Companía, Eibar, Basque Country, and is notable for being a common Spanish handgun with the Eibar Type safety located above the grip. It was followed in production by a 7.65 mm version which was produced for the French army during World War I. The standard magazine contained nine rounds, but in production models used only six or seven. The weapon is a copy of John Browning's 1906 pistols.
This is a semi-automatic pistol made by Isidro Gaztañaga. The pistol bears the name "I.G". and is in .25 ACP (6.35mm) - Center Fire. The magazine holds six shots. Other capacities were made available for the military. The pistol was issued to Spanish fifth columnists in the 1930s due to its small size (and hence was able to be concealed easily). The .25ACP round was not very powerful and was of use only at very close range. The barrel length is 2 inches (5.1 cm) and the overall length of the gun is slightly over 4.25 inches (10.8 cm).