Other than the designer company and the calibre, this weapon is not related to the semi-automatic 25 mm Hotchkiss anti-tank gun; in particular, the cartridge used is different.

In 1938, as the international situation was worsening, and the favoured Schneider 37 mm autocannon was still not ready for production, the French military decided to reconsider its refusal to Hotchkiss, who had just won a contract with Romania.

The original tripod was found to be unstable, which led to the development of a revised variant with a triangular base with a two-wheel carriage.

With them and only approximately two hundred Oerlikons, the lack of modern light AA guns greatly hampered the French army in the campaign.

Five were received in January 1936 and installed during the Spanish Civil War in the destroyers Jose Luis Díez, Lepanto and Ulloa.