Remember if you are planning on bringing your guns across the border you might run into issues, as our laws are quite different.
Your gear and accessories/mags/etc should be okay as long as none of them are ITAR items.
But as mentioned your guns may be an issue.
Ensure they all are firing above 366fps from Factory specs (if the factory does not show them as shooting above 366fps, CBSA might reject/seize)
There are several threads on ASC that cover a lot of this information, although a fair amount of it is in the AV sections, which you would need to make a trip up to the Vancouver area to meet with an AV rep to gain access in person.
Saskatchewan Age Verifier! Contact for more Info.