In fact, this ugly MPX was unveiled at the 2019 Vegas Shooting Show in the United States, which belongs to the shortest of the MPX submachine gun family, firing 9mm pa bullets. Its total length is only 14.5 inches (368 mm), and it weighs two kilograms. But its layout is also the shape of a submachine gun with the magazine front, so the barrel length is only 3.5 inches (89mm) of the pitiful Baba, which is no longer than the barrel length (102mm) of the Glock19 from the perspective of the barrel alone.
SIG's MPX submachine gun series was launched in 2013, and the brothers of Play Color Six are no strangers to the laser accuracy of this gun. In fact, the accuracy of this gun is also very high in reality, because the MPX series does not use a free bolt that is not very locked like the general submachine gun. Instead, the air-conducting piston + turn bolt lock, which is commonly used in assault rifles, is used to lock the bolt, although the structure is slightly more complex and the cost is relatively higher. However, the high-strength lock-in and gas conduction is still good in terms of the work of gunpowder gas and the reduction of the weight of the bolt. To add another sentence, our 79 punch is also practically a gas guide piston + turning bolt, which can basically be said to be a mini version of 56 punch.
Pictured below are the bolts and recoil springs that look very long in the style of the AR18 rifle, and the MPX copper-headed viper must also be of this kind, but much more compact than him.
Another name for the copperhead viper is ultra-compact MPX, which translates to ultra-compact MPX. It is used as a PDW - personal defense weapon, but since the fully automatic military/law enforcement version does not come out until the summer, the rate of fire is not yet known. However, according to the previous urine nature of MPX, it is estimated that it will not be less than 850r/m. And the shorter bolt stroke if the rate of fire is not too high, SIG estimates that it is necessary to consider how to reduce the speed.
The operation method is the same as its brothers in the style of the AR series, after all, there are many AR believers around the world. Especially at present, its launch is mainly aimed at the US civilian market, and the operation mode of AR is easier to find users. Others such as rails, left-handed magazine release buttons, manual safety switches, bolt release buttons, etc. are all routine operations of modern submachine guns/rifles, and there is not much to say. What's more interesting is that the PCB stock of this gun (Pivoting Contour Brace is quite difficult to translate this, almost understand it as a rotatable support hoop), this device is a loophole in American law.
In the U.S. Gun Control Act, rifles with stocks are called short-barreled rifles for rifles with barrel lengths below 16 inches or a total length of less than 26 inches. The short-barrel rifle is strictly controlled by the United States, but their definition of a pistol is almost a one-handed gun. Therefore, a considerable number of short-barreled rifles are counted as pistols as long as they do not have stocks, and the restrictions on purchasing pistols are very small.
Here are the "pistols" in U.S. law.
And then after you add a brace hoop it's like this... pistol? Yes, it's the pistol, which is very American.
This gun has only been sold for a month, and the user's evaluation is that this is a very good truck gun... It's almost a weapon that's put in a truck to guard against robbery. Because it was compact enough compared to other long guns, the latching method and the shorter rifling winding distance made it more accurate than the average pistol. However, from my own point of view, this product is also SIG's product line to improve MPX. If I really want to use it as an emergency self-defense, I would rather choose a pistol, and as a military PDW, the penetration and stop of 9mm are slightly insufficient, and the complex structure of the rotary bolt + gas conduction also makes him have no advantage in price. In addition, this gun is really ugly...