Not sure, I understand your problem, I have brought rifles in to Canada before the $50 dollar fee and every year sense they started this money grabbing fee. It's a simple process. You stop on the US customs side declare your firearms ( this is so you can bring them back in) all you need is serial number, make and model, written on a paper, They can ask to see the guns, but, most of the time they don't. They hand you a slip (don't loose it). Then when you get to the Canadian Customs, you declare, you have firearms, they hand you a yellow slip most of the time and ask you to come in. They do a back ground check, you fill out the gun Reg paper work, they log the guns in and away you
go. The 50 dollar fee is good for up to 3 guns and good for one year from the date you pay the fee. I keep a folder with every years paper work, makes filling out the new form faster and I reg the same guns year after year. They relax a little more when I say it's the same guns I have brought up the last 7 years.