At a LGS in the States, back a few years ago, I saw a Sig Sauer AR style rifle in .22 LR, all set up with an excellent rail system and everything else I suddenly realised I wanted, the rifle and everything about it was head-and-shoulders above anything else there, or that I'd ever seen in the .22 line. Noted the model number but when I got back here found out that Sig doesn't even try to sell them in Canada. Still interested though. {sob}
More recently, saw a Ruger 10/22 Takedown "Tactical" model, short barrel, treaded muzzle, in a similar store, but already knew they aren't coming into Canada (altho someone here did find me a very similar version online). Really, I have to stay out of those USA gun stores, they only break my heart with all the great unobtainable stuff they have.