Vintage, Vietnam-era camera gun
This fantastic movie camera with a rifle stock was apparently made for a Vietnam War reporter, and one can only wonder why: while it perhaps makes sense as a stabilizer, you'd think it would behoove the embededded film journalist to not look like he's packing when the Viet Cong suddenly pop up from their sub-cthonic burrows.
Either way, it is absolutely gorgeous. It's up for sale on eBAy right now for about $1,318. As the lyrical maestros over at Born Rich explain: "No doubt, the gun is a notion synonymous to death, but a movie camera in the shape of a gun is really a pleasing idea." It sure is, you guys. Nuff said!
Paillard Bolex H9 Mi Gun outfit [eBay via Born Rich]

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Nikon made (at some point) SLRs decked out like sniper rifles for long zoom applications. I wasn't able to find a link unfortunately, but I remember the things looking even more gun like than this.
I think this was for an army reporter. They'd be wearing fatigues and they'd have a sidearm, so the style of camera is sorta moot.
There is a similar shotgun form-factor early still camera at the German Technical Museum in Berlin.
I had been planning to link to it after a recent post that mentioned a "pistol grip"-style video camera but never got around to it. :-)
I can't imagine why this form factor isn't more popular.
--Phil.
Russian companies produced quite a few SLRs mounted on rifle-grips with specially-adapted shutter releases. They provide an excellent way of using long lenses without having to resort to a tripod, they allow you to remain mobile and still have a reasonably steady support - this is excellent in war photography and indeed they were originally designed for military use (particularly trench warfare) , although they found application in wildlife and sports photography.
http://cameras.alfredklomp.com/fs12/
I imagine the principals are much the same in this case, giving the photographer steadier, more professional footage in a situation where a tripod would be impossible. From my limited knowledge the Vietcong rarely distinguished between embedded journalists and soldiers anyway so the journalist wouldn't really be any safer without it.
That's just a normal Bolex with some sort of custom gun stock/trigger mounted to the tripod thread. Looks cumbersome.
Here's a more modern look at the same idea.
http://www.bushhawk.com/
Born Rich found this on Retro Thing, where Bohus mentioned that he owns two of these. The "Vietnam reporter" bit in the eBay description is a complete fabrication. The true intent of these stocks was to allow "run and gun" wildlife photography with long and heavy telephoto lenses.
I suspect they were also popular for covert surveillance as well. They would have enabled decent images at long range before the invention of optical stabilizers, without the need for a cumbersome tripod.