"Like New" Leupold Sako QR (Quick Release Bases)

I have an unused set of Leupold Sako QR Bases which allow the user to swap out scopes on a Sako rifle without losing your zero.  They were purchased for a Sako AV bolt action rifle as a solution to give me access to my open sights on a dangerous game rifle.  The issue for me is that the bases remain fixed to the rifle but they release the rings and scope---the bases are left behind.  The bases obstruct vision of my rear sight which is why I'm selling them.  I require a solution where base/ring and scope come off as one unit.  To my knowledge the integral tapered dove tail rail has not changed over time so these bases should fit all Sako model bolt actions with the tapered dove tail rail.  To be 100% sure you can call leupold for their advice/response, but I was told by them that such bases were designed for all sako bolt action rifles.

 I will ship to any address in Canada using a padded envelope with regular postage which amounts to approx. $5.  This is the cheapest way to get this type of item to you.  To date, I've not had any packages fail to get to their destination.  If you prefer to have a tracking number, then a flat rate box costs approx. $20 more.  Price is firm if you want it shipped regular mail as they are brand new.  Thanks