I've found a new site (new for me) that has to have one of the biggest stocks I've seen on line so far. Keep in mind I'm talking about stock here, not just a bunch of pictures with "out of stock" written under everything. It's in CA, USA and don't mind shipping to Canada. You can check them out at
http://www.airsoftpost.com/index.php
I've made my first order and the shipping might be a bit high but they have what I want.