"...fix acceptable to armourers..." Nope. The techies would just change the stock. Easier thing to do when you have bins of 'em vs searching the world.
I don't think you'll get the right amount of pressure with that for accuracy. Try it. It won't be unsafe to shoot though.
Fortunately, being in Calgary helps. Epp's in Orillia, Ontario has forestocks at $119.99. They say they're dirty and greasy, dinged and scratched, walnut, but in "good condition". Dinged and scratched isn't a big deal.
Firearm Parts - Hunting