Without getting into politics, home defense isn't a typical Canadian firearms application, I do have a Kel-Tec Sub 2000 in 9mm, with Glock magazines and I have found it to be a very handy rifle in a small package.
To keep our rifles in the non-restricted (long arm) category, Kel-Tec did a production run of 18.5" Canada compliant Sub-2000's which was much appreciated by our firearms community. Mine has been employed as a plinker and made a very slick pack rifle for when I was travelling on remote Northern roads alone. It could be all packed up in a very compact bag with ammunition, but could deployed rapidity if needed, in the travel bag it was discreet enough not to draw unnecessary attention should I had to walk back to civilization. A survival .22 would have been another option but being stranded on foot in areas where wolves, bears, and aggressive coyotes were a concern, a 9mm seemed the more prudent choice.
It doesn't have the overall character of the M1 carbine but the Sub-2000 is an interesting option in it's segment.