Ottawa quietly expands gun buyback program to include parts

The question that I have not seen asked is why are these guns being destroyed?

I may be ignorant to some reason why it is not possible, but wouldn't the best idea be to buy back all of these weapons for use in the military?

I hear our military could use millions of guns and parts, and it would actually justify the cost of the program. It would also be a massive increase on military spending our allies have been asking for and that we are in serious need of.