A video from Firearms Guide at the SHOT Show 2017 --- the XM556 Microgun, the gun that we are dying to see an airsoft version of. Made by Empty Shell, the XM556 uses the 5.56 NATO ammo, it is smaller than the miniguns such as the M134 and lighter as well, making it a good choice for defensive suppression without the less heft than other Gatling gun systems.
Two videos about the new Real Steel ACR-C (Adaptive Combat Rifle - Compact) made by Remington Defense which we hope would also have an airsoft version. With stock folded it is one shortest of the Personal Defense Weapons which should be good for close quarters combat and vehicle mounted troops. Videos below are a presentation of the features and firing at full-auto.