WGC Shop are now taking pre-orders of the VFC MP5K Gas Blowback SMG which they expect to be arriving by the end of June 2013. This has a lenght of 320mm a weight of 2370g, and powered by Green/Top Gas. The package comes with a the MP5K, a 30-round gas magazine, manual, and BB loader. Price is at US$354.00 and video below showing it being fired and more photos right beneath it.

(Update: It's in stock now.)