I'm not optimistic about a standalone weapons set.
I figure if I can get an extra armored kit, and an extra blue-green, I can donate the armored parts to the blue-green AND donate the wings w/ weapons to my standard Alto kit. I'm hoping that buying a whole armored kit just to salvage parts from won't sting so bad if it's serving 2 purposes instead of 1...
Or... to look at it a different way, I guess if I donate the armored parts the left behind stuff IS the non armored Alto kit with wing weapons that I want...