I'll have to say that the GHK G5 Gas Blowback SMG is the second most hyped-up gas blowback SMG after the KWA KRISS Vector GBB with the Tokyo Marui MP7A1 GBB a far third. We're getting more and more reports even before the product has been released and GHK better make sure that this product lives up to its hype when they finally release it. WGC Shop are taking pre-orders as they expect it to be on their shelves by the end of March 2013.

Here's is their review of the prototype and at the same time posted a video that it can also use 134A gas.