When I crossed into Canada headed south last June the only thing they were interested in was whether or not I had any "marijuana products." I had the paperwork for the firearms I was carrying and they just said come on in and we'll take care of it. Took about 15 minutes. Components or ammo never came up in the conversation. When I hit the US border in Montana they asked if I had my 4457's for the firearms. I did not, but all they said was "It's a good idea if you have those....keep it in mind for next time....have a nice day!"
