Probably the same company that produces the GSG is building these for HK. That's how they can keep the same price point.
actually, I head that it is Umarex making them, which is the company that is making the Colt "tactical" AR.22.
I just wish they would make a civilian SF MP5.. that didn't cost $$$$$$$$$$$$
BDM Loaders. Here you go. And they work very well.
http://blackdogmachinellc.net/crank-loader--ar15-22.aspx
That loader will not work on the AR type mags. It is a smaller version on the uplula for pistol mags sized down for .22. I don't have the BDM loader but made my own by modifying the butler creek loader like BDM did but have a different wat to hold the mag in place. Works like a dream.
Sorry OP for taking the thread off topic. I will try to post pics of my loader in another thread.