invest in an upper receiver vice block. worth its weight in gold.
I heard that about airsoft taiwan as well, and was very sketchy about ordering from them, I actually ordered a second set from Redwolf (which also carries the kit) because I heard people weren't getting shipments sent from airsoft taiwan on time...
AST actually shipped my package first thing the next morning, and it got to me before my Redwolf order. So... I could be the fluke, but who knows.
Anyways, the set is instock here (for now at least):
http://www.redwolfairsoft.com/redwol...C_G_Series.htm