What MajorLK says. I can't purchase anything Magpul (well a couple of things) from the USA and local dealers have hardly any stock and charge the earth. But I can buy PTS, and have used them on Airsoft guns for years.

Currently I own a PTS :
MOE RVG
MOE stock
UBR stock
AFG1
AFG2
Gen 2 sight set
MAID grip

There is nothing PTS that I own that I am not happy running on a 15-22. (obviously with the exception of the UBR. I'd love to use it, but can't)