Thanks to fellow Bujinkan practicioner Jeff Sherwin, who knows my interest in firearms, for giving me copies of a couple of photos he took on a recent trip to Japan. Pictured here is what is apparently either a flintlock or percussion blackpowder single-shot pistol, artfully concealed to resemble a tanto. This would be worn in a samurai's obi, even in a castle, where longswords were often not allowed. This is a digital scan of a low-contrast analog photograph, so please forgive the lack of detail:

Here's a blurb from a Japanese tourist guide:
The simple yet magnificent castle has become the symbol of Matsumoto. The 5 tiered 6 storied castle tower is approximately 30 meters tall and is the nation's oldest among existing castles. The dark stairwell leads to a viewpoint of the Matsumoto plains. The moon-viewing turret and all sorts of crenelations for stones, arrows, bullets and such still remain. The battlements and the scarce windows are all parts of the historic war strategies which display the intense power struggle of the times.On the 2nd floor of the Matsumoto-jo Castle tower is an exhibit of 106 historic guns [emphasis mine - ed.] as well as references regarding modern weapons.
All the times I've been to Japan, and the year I lived there, I never thought to visit this museum near Nagano. I plan to make the trip sometime, and take a very good digital camera with me. Jeff has enticed me with descriptions of grenadier samurai armor and lacquered blackpowder grenades. I really must see this stuff.
Oh, and relatedly, I guess it's about time I get around to writing a review of Noel Perrin's Giving Up the Gun: Japan's Reversion to the Sword, 1543-1879, as I'd mentioned a while back.
Posted by Russell Whitaker at February 23, 2003 06:35 PM | TrackBackI could see something like this in .44Mag, but of course that would be illegal...
Posted by: Curt Howland on February 24, 2003 10:15 AMCurt: not if it's blackpowder, in many otherwise non-carry jurisdictions! Check out your local laws: you might be in for a surprise.
Posted by: Russell Whitaker on February 24, 2003 01:33 PMI've just now posted some more images which Jeff Sherwin handed me tonight at the dojo.
Posted by: Russell Whitaker on April 23, 2003 01:57 AMI have one of these tonto guns. Its not in the best of shape, but it's still all intact
Posted by: Matt on March 4, 2008 04:15 PM