They are "Ranger Canteens" and they are not being sold. One of his ODA buddies is trying to secure a manufacturer but so far he has been unsuccesful.
Your Green canteens with the wide mouth. Who is the manufacture and where can I get some of those? I have been looking for years for the USMC arctic ones, but have had no luck. Well, that's not entirely true, i found one for $150+ once.