I couldn't help myself, I have all the Zoraki Blank Guns except for the latest Zoraki M906. This is Atak Arms most compact blank gun and it's even smaller than the Zoraki Mod.914. It does come at a bit of an ammo capacity cost as the M906 can only hold 6 rounds due to its shorter and thinner handle.
The Zoraki M906 appears to have more usage of composite component, so it should be a very light gun. It also has a more traditional design than Zoraki's other automatic blank shooter.
I'm looking forward to receiving my new addition some time late next week...