Siamese affair, and now it's enabling hunters, soldiers, officers of the law, and anybody who likes shooting stuff to get an up-close recording of exactly what the heck they're shootin' at. When we reviewed those 3D cameras we weren't exactly smitten with the VGA quality, but hopefully the 720p sensor in the new Tachyon XC HD tackles that. It's built into the same shell that struck us as being hugely durable before, and now it's even more so, rated waterproof to 100 feet. The new camera will set you back $179, matching GoPro's recent HD Hero 960, while that Picatinny rail mount is $27 -- unless you're a member of law enforcement or the military, in which case it'll be free. Full details in the PR below, as is a fun video of a little GunCam action.