>>6646796I only have the Ground GM but they're pretty similar. They're pretty fun kits and very solid, they do show their age but only in that they're not up to the current MG standard of crazy detail, articulation and inner frames; as they don't have that many parts or details, the movement is pretty limited and the frame is limited to the arms and legs. That isn't much of an issue though, they still look great and require minimum paint (outside of the accessories and guns), and there is a charm to the plain and simpler look, plus lots of room for custom work. Its right around the point where MGs started becoming really good, as most kits older than it you can expect minimal to no inner frame, have far more need for paint and possibly even worse articulation.
The one thing to watch out for might be the joints (inner frame is ABS), particularly the elbows as they actually include screws so you want to be careful to assemble right and not break anything, don't over-tighten them. They are rock solid once completed though, the opposite of a hand grenade.