THIS site should help you out, you can contact the point of entry customs office of your choice if you have any questions.
Originally Posted by tranquility
Need information when traveling from USA thru Canada and back into USA with a weapon.
Chuck 1935 is correct...no handguns and ya better not try! I checked by phone and it is OK to carry handgun ammo (I suspect in low quanities, I was good to go with 20 rounds). I disassembled a 9mm(kept a few critical parts, in case of theft) and shipped into Alaska from the US(this is not illegal according to a gun dealer). I also had a 12 guage, with a few shells, that we carried with a cable lock installed. Pay your $25 CA($28 USD) and submit a 909 form and you're good to go. Be sure to have your shipping receipt for the handgun before entering the custom's office...we had all our ducks in a row except for that receipt and it cost us an extra half hour and four agents(they found the receipt) doing a very in depth search of the MH and toad. No damage, but they went through EVERYTHING. DW didn't take her handbag into the customs office and I guess that set off the warning signals as well. After they determinded we were not a threat to their country, attitudes changed with smiles all around.
The 909 form is good for 60 days...if you don't make it out of Canada in that time frame, it'll be another $25 bucks. We also had a big can of bear spray(with a pic of a bear on it), no problem. Bob