For the same reason we build ships in Halifax when buying Korean hulls would cost under half the price, there is NO WAY the government would source those guns abroad. Firearms manufacture has been deemed a strategic defence industry by ISED Canada. The procurement is exempt from international trade deals, so the Industrial and Technological Benefits policy applies (think Canadian version of the "Buy America" policy.
Have a look here if you feel like getting sleepy.
https://www.ic.gc.ca/eic/site/086.nsf/eng/00006.html
The Ruger was likely not selected, foremost, because they likely would not transfer the Intellectual Property to Colt Canada for domestic manufacture.
So why do we not buy Canadian made military issue machine guns, handguns and other issue firearms instead of foreign made issued firearms and their parts?




















































