This is a very scarce and desirable Mexican Obregon .45 caliber semi-automatic pistol. The design is based heavily on John Browning's design for the Colt Model 1911 and 1911A1 pistols but with a combination slide and safety latch on the left side of the frame. The pistol was designed for the Mexican military but was never adopted, and with an estimated 1,000 of these pistols produced for commercial sale, it is incredibly scarce to find in any condition. The left side of the slide is marked "Sistema OBREGON/Calibre 11,43", and the right side of the frame is marked "FABRICA NACIONAL DE ARMAS MEXICO PAT No 35053" above the serial number. It has fixed sights, grip safety, and the entire length of the top of the slide is checkered. The combination safety hold open device and takedown lever is 3 5/8 inches long, basically covering the rear half of the left side of the frame above the grip. The grip straps are serrated and the grips are checkered. The full blue magazine is unmarked.