Originally Posted By Eth01:
Wolverine supplies
The Shooting Edge
Canada Ammo
Arms East
Questar
P&D
Ellwoods
Milarms
William's arms
and a lot more....
Canada Ammo dosen't currnetly sell AR15s, but they can hook you up with a Tavor, a Type 97, a Grizzly or an Outlaw instead. I have bought ARs from Questar, and major components and other firearms from TSE, P&D and others, Ammo from Canada Ammo and Wolverine... I would happily buy from any of them again.
WARNING!!!! Grizzly shotguns are extremely hard on ammo...ask me how I know!

I'm from the US but spend a lot of time across the border... Dlask sells assembled guns and components. I HIGHLY recommend them, EXCELLENT customer service on the phone, and even better in person.