HK USC 20 round magazines.
20 Rd mags from Pro Mag, $40 instead of the $130 HERA mags.
http://www.promagindustries.com/ProductDetails.asp?ProductCode=HEC%2DA7
Awesome. It's about time somebody started making aftermarket USC mags (besides the $130 HERA). I'm going to give these a try.
Now if these will just work. I have been suckered in too many times in the past getting Pro-Mags and every single one I have bought have been junk, AR, Beretta 92, Beretta 96, Ruger, and Para-Orndance, all of them totally 100% pure junk. I must not be too bright because I kept allowing myself to be suckered in by the hi capacity and cheap price, and have been burned every single time. AFTER I read about a hundred reports of these USC mags being 100% functional just like the overpriced HERA mags, THEN I MIGHT try one, but I refuse to be burned again, especially at $40 a pop.
I've used Promags once before; they were 20 round .40 mags for a carbine. They functioned fine as far as feeding, but I couldn't put 20 rounds in, more like 15 and the spring got extremely tight. I'll give these a try in the near future and report back.
Don't magazines like this screw with the whole "cannot accept a high-capacity magazine 922R" thing for import means?

Originally Posted By Jimmeh:
Don't magazines like this screw with the whole "cannot accept a high-capacity magazine 922R" thing for import means?

Since the magazine body, floor plate, and follower are all made in the USA I would assume it would be legal. From what I see online, three US parts seem to be required for compliance.