I hope you understand me because my English is very bad.
The Obregon Pistol is not really a 1911, is was more a Roth Steyr Model 1907 system.
The apearence of 1911 is just external.
Only a few Obregon pistols were produced for the high rank official of the Mexican army.
Up until this president of Mexico(Fox)Mexico was still ordering 1911's from Colt. Upon his election there was an order for approximately 250+or- Government MK4's,Colts model # 02570E in 38 super ready to ship. The Fox administration cancelled and Colt put them on market in US. Colts in 38 Super are coveted by Mexico cops. The more pimped out the better.