Unfortunately there isn't really that much in the way of good gun shops or surplus here. There is Perry's which generally is overpriced and hunting orientated, but that being said occasionally you find a decent deal there (though I have been burned a fair bit there so I tend to avoid it). Otherwise the only other gunshop in the Sault is NAS GUNs and they are more into the shotgun/more modern firearm type market. It is a very small shop and I have only been there once or twice (it is fairly new and doesn't really stock the stuff that interests me so I don't have much more to say on it).
The only surplus store is Joe's surplus, which occasionally has some interesting things but for the most part is a outdoor outfitter store than anything else.
If you have anymore questions feel free to ask.