Get Reload have this in stock and are selling it for US$220.00, shipping costs not included. This works with the WE Open Bolt System and has iron sights rather than built-in scope. It has a folding bi-pod and longer profile. It still kicks hard just like the smaller G39C that was released ahead of it.

The product description at the product page is not the right one, it's about the A&K M249 MKII AEG so just ignore the description there.