A commercial version of the Czech military model 21 pistol. Heavily influenced by the Browning/FN Model 1910. With standard Czech proofs on the left side of the slide, fixed sights, magazine catch at the heel, fixed barrel and standard striker firing mechanism. Fitted with "PRAGA" marked molded hard rubber grips. With a unique threaded barrel with tread protector. Czech 1920 (September) proofs present on left side of slide.