I just wanted to basically echo what Jason said in his earlier post. There used to be several places here in the greater Phoenix area that sold GHQ Micro Armor but they have either gone under or stopped selling it. Game Depot down in Tempe used to carry a fairly limited selection several years ago but has since dropped it. Waterloo games in North Phoenix carried it but the store closed down in the late 1990's and the stock was sold off. Your best bet is to order directly from GHQ.
I am also in the greater Phoenix area, specifically Surprise. If you are in the Phoenix area let me know and we can get together sometime. I run Mein Panzer occasionally at Imperial Outpost Games and am looking for more playtesters for the GHQ skirmish rules.
My name is Pete.