Miroku Liberty Chief is a revolver produced by the Miroku Corporation in Japan. The Miroku appears to have been made for Japanese police (wich where armed with the Nambu Model 60 revolver), though given it's time of manufacture, it might have also been produced as a competition piece as much as a Nambu replacement. The Japanese police used revolvers during that period, but, however, the Japanese preferred to use semiautos as soon as they were able, and so Miroku instead almost completely exported the gun to the US under 'EIG' and/or 'Liberty Chief' names. Dimension-wise it was pretty much comparable to a S&W J-frame. It had a Smith & Wesson "Chiefs Special"-style grip, but otherwise the gun looks more like a Colt, especially with the exposed ejector rod and Colt-style cylinder latch. There also were slightly bigger "Special Police" version, outwardly similar to the Colt Detective Special.