That’s the anti-aircraft feature.

Short, controlled bursts. It is also very controllable when shot from the hip.

JMB Classic
 

Found this and thought it was Firearm of the day worthy!

The quest for a repeating handgun took some strange turns on the way to the revolving cylinder.



This particular oddity is known as a Harmonica Gun, because of the distinct appearance of a steel slide that contained a number of chambers.

It's a firearm innovation that preceded the perfection of the centerfire cartridge. On the earliest models, each chamber was breech-loaded with a powder charge, projectile, and percussion cap. You could say this design's heart was in the right place, but it just didn't quite get there as a practical repeater.

The slide was inserted into the breech. After firing a round, the shooter released a camlock to advance the slide through the gun. The problem was, each chamber had to be lined up with the barrel and hammer by hand. There were no indexes or mechanism to progress the slide. On later models, this was rectified, with some double-action models produced that advanced the slide through the gun to a new chamber as the trigger was pulled. But it was still bulky and awkward.

A famous maker of harmonica guns was Jonathan Browning, the father of even-more-famous John Moses Browning. He began making the guns in 1834 in Quincy, Illinois, along with more conventional revolving rifles.

This video from Forgotten Firearms shows two examples of harmonica gun designs. These two are pinfire weapons manufactured by Jarre, which used metallic cartridges that basically had a primer inside the brass case with a tiny firing pin extending from the primer and protruding through the top of the case. A second type of harmonica gun, shown in the video, uses a slide with a small barrel attached for each chamber, instead of a stationary barrel.

video:

https://youtu.be/y-N1MRFnByQ

That’s cool as heck , thanks for sharing!


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:D

love this thread! Good stuff here with some learning too

Here is a Jonathan Browning Harmonica Rifle (with some background info on Jonathan Browning)
:
https://www.youtube.com/watch?v=GxNcjRf0O0o

http://www.cotep.org/forum/picture.p...&pictureid=888

Nice!!!


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I liked the video. Interesting weapon and great background on the family.

Neat!

Great thread. I really like it.
On the M1 Carbine, it's one of my favorite historical weapons I always wanted to add to my collection. But, alas, it's one of the prohibited weapons in this state.
A few years ago we picked one on up on a gun buy back program. It was in excellent condition. I convinced my agency not to destroy it.
We can't do anything with it, though. At least it'll be a conversation piece. That and the German Luger that was brought in by a WWII veteran who took off a German.