MK11 Windbreaker

The is a next generation submachine gun design developed by Rubicon Corporation. The System utilises an unconventional delayed blowback system combined with in-line symmetrical design similar to the AR556 pattern rifles and the MK6 MCWS to reduce perceived recoil and muzzle climb.
==Design==
The Windbreaker uses an articulated mechanism referred to as the "Mechanism V", which allows the bolt and an inertia block to move downward into a recess behind the magazine well. The theory is that at the end of this travel, the energy is transmitted downward rather than rearward, thus reducing the felt recoil. When fired, the barrel axis is in line with the shoulder as in the MK16, MK36 RWS, MK6 MCWS rifle, but also in line with the shooter's hand. This is intended to reduce muzzle climb when combined with the off-axis bolt travel, though it also greatly raises the sight line in comparison to the bore axis. The initial prototype model by Rubicon Corporation achieved a rate of fire of 2500 rounds per minute, though this was brought down to exactly 1,200 rounds per minute on the standard production models.
It is split into two major assemblies in a similar manner to the AR556 rifle, secured together with four push pins. Due to the weapon's unusual layout, the lower contains the action, charging handle, magazine well and barrel, while the upper contains the ejection port, rail system, pistol grip and fire control components, as well as the stock for configurations that have one. This modular design allows for tool-less caliber conversions by swapping out only the lower. The MK11's safety is ambidextrous (as well as the fire mode selector on the auto trigger pack) while the ejection port, charging handle, bolt release catch and magazine release are not, and are only available in a right-handed configuration.
Calibers such as .22 LR, .40 S&H and 9×19mm Parabellum were mentioned when the gun was first released. The Gen II versions with multiple design changes including a new 9mm variant were confirmed at NX SHOT Show 2015, though the Rubicon Corporation released a statement that the .45 Auto is the standard caliber available.
Windbreakers chambered in .45 Auto are designed to accept standard Gluke 21 pistol magazines. In 2019, Rubicon released the "MagEx 1.5" which extends the capacity of a factory standard Gluke Magazine. The MagEx 1.5 is available in 9mm for an overall capacity of 40 rounds, 33 rounds of 10mm and 30 rounds of .45 Auto.
===Specifications===
*Length: 410/620mm
*Caliber: .45 Auto
*Effective Range: 200 Meters
*Weight: 3.33 Pounds
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