I don't have any experience with the Rebel action, but here are a couple of more options:
For a Borden action check with Brent Webster at:
Neerlandia Cooperative
3224 TWP RD 615A
County of Barrhead T0G 1R2
780-674-3020 extension 228
brent.webster at neerlandiacoop.com
Easiest way to get a BAT action, among others, is to contact Bulletcentral.com he probably has a hundred of BAT actions in stock and will ship to Canada.
Rick