Various kinds of guns were experimentally produced, such as a triple-barrel hinawaju which had three pans and whose gun barrel rotates like a revolver, a level double-barreled pistol and so on.
火皿を3つ付けたものや、銃身がリボルバーのように回転する物など三連発の火縄銃や水平二連式短銃など、様々なものが試製されていた。