"ATF Approval was the biggest hurdle for us. Some more info for you:

Now that we know that the gun is importable officially, GSG & American Tactical will purchase the factory equipment and parts to begin production, this will take set up time.
American Tactical will be selling these through our distribution network so gun stores will be buying them from wholesalers. These guns will only be available for direct purchase via our website when there is overstock in our warehouse. It will be a while before there is any warehouse overstock, so your local gun dealer is the way to go to get one. There is no waiting list, unless you are one of our distributors (listed on our website) you cannot order one from us.

Our best estimate for delivery of the first shipment is 6-8 months right now, which is not a lock and is subject to change depending on production gear up and any potential issues that may occur."