Hah, Forgot I even wrote this... I still have yet to finish it after 4 years!
I've since sold this rifle, and then bought another one! Its currently an empty shell (I've discarded the internals save for the trigger assembly) until I can save enough cash for a complete PDI upgrade.
As for the magazines, there are none out there that I can think of. PDI sells extra mags, but I think they're just CA mags. same crappy brittle plastic.
Sucks
