It's another firearm from the newly-refreshed "Hollywood Guns" exhibit at the NRA National Firearms Museum. Senior curator Phil Schreier shows John Popp the Type B or "Baby" Nambu 7mm semi-auto pistol produced in Japan between 1902-45. It was a common Imperial award to cadets at their naval academy. Only 6,000 were made. It appeared in Clint Eastwood's Letters From Iwo Jima. It looks a lot like a small version of the Ruger Standard, with good reason. Bill Ruger took a Baby Nambu and designed an exact copy with internal modifications in .22 caliber. The prototypes worked flawlessly, requiring no modification. Ruger didn't produce the gun, however, concerned that it was too easily concealed.