texas yankee

I've seen some of the GSG products for sale from online vendors that I'm familiar with - Buds Gun Shop, for example, has the GSG AK (in wood) - but I haven't had much luck finding some of the other GSG rifle products like the 522s and the STG-44 - can anyone point me to an online retailer that stocks more of the GSG rifle products? Why online? I have an FFL that does $10 transfers, and I don't like paying taxes and (typically) higher prices at local gun shops. Thanks in advance for any pointers!