TSE had some last week.
edited to add: Wolverine is indeed the official importer for Armalite, but there are several rifles which have the same spec and are frequently referred to as "AR-10" - the rifles that were 'in stock' at TSE last week were DPMS and generally conform to what most people describe as AR-10, though I would agree that they are probably closer to an SR-25 from the perspective of magazines. The DPMS at TSE would at least give him a chance to shoulder a very similar rifle if he happened to live closer to Calgary than Virden. No knock on the Armalite product intended, or the folks at Wolverine.