@Rylan,
I was wondering the same thing but then I stared thinking of getting a custom bayonet blade made instead. Something with a 1/2 longer tang and then making new grip plates for it. Reuse the pommel and tang.
@can14,
I just ordered a bunch of m1 carbine parts from the US, Northridge International inc and InterArms inc both ship to Canada.
By that reasoning M1A PARTS couldn't leave the US either as they fit in the M14..
Also if you go to a site like Numrich the have a 'Part cannot be shipped outside of US' for all the MG34 parts I want but no such restriction for M1 Carbine parts.
Brownells also has M1 Carbine bits for sale and will ship to Canada.
Munrich will not ship M1 carbine parts to Canada