Editing Combi-weapon (section)

===Combination Gun===
The major combi-weapon outside the military, meanwhile, is the combination gun. Essentially, this is a way to give a hunter the ability to almost instantly line up and fire another shot if he misses by simply adding a second barrel to the gun, while additionally it is often used to create a gun that can fire multiple forms of ammunition by making one barrel rifled and the other smoothbore. In Yurop these are called "drillings" (or vierlings for four barrels and so on) or "cape guns" and if you're a disgustingly rich Nob looking to spend a lot of money on the gun equivalent of a BMW then these cater specifically to you. Sometimes three barrels are used so the gun can simultaneously be loaded with a rifle round, a shotgun slug, and bird or buckshot.

Either way, these later two cases give it a niche military use as a survival weapon for aircrew, which can range to the logical style of a light and simple rifle with a shotgun barrel, to [[What|a high-end and expensive 'survival' weapon that's a 1-to-1 copy of a civilian big game rifle]] [[Fail|and weighs so much you can't parachute out with it (so have to hope you can recover it from the wreck once you land)]]. Yes, the last one actually happened, [[Nazi|Herman Göring]] used them as standard issue for the Luftwaffe, because of course the [[Slaanesh|obese, ostentatious manchild]] decided it was a good idea. Less flashy and more economical versions of the same concept include the USAF's M6 survival rifle, or the Soviet Union's TP-82 Cosmonaut survival pistol.

Another example was the Swedish NIVA XM1970 in the 1970’s. Not content to merely have Carl Gustav recoilless rifles and regular guns distributed within a platoon and wanting something with more firepower than rifle grenades, the Carl Gustav tried to mate a bullpup rifle with a recoilless rifle to give a soldier more dakka. Unfortunately they never figured out how to trim weight and size down. And nobody in the military was even interested in buying the thing.

But nobody out-riches the US Army, who tried to make their own combi-gun called the [[meme|OICW]]YDT, combining a crummier version of an M4 carbine bolted to a computerized laser-ranged airbursting grenade launcher. The smart grenades for this thing cost more EACH than the gun it was combo-ed with. The whole thing weighed about 30 pounds and was as easy to carry as a similarly heavy sack of dog food. Eventually the combi-gun idea part of the whole deal was scrapped and the smart grenades were tested alone as the XM25 before being dropped for being too expensive and not reliable enough. The South Koreans built a similar weapon, the K11, which was likewise cancelled. The Chinese, meanwhile, came up with the QTS-11, which tries to solve these issues by making the grenade launcher portion a single-shot bolt-action weapon with less electronics in the warheard. It remains to be seen if this approach is at all more practical, because its still expensive hardware of questionable efficacy.