The United States will NOT export ANY .50 caliber firearm to Canada if the end user is a civilian/private purchase. Barrett, Bushmaster, Anzio...doesn't matter.
I do not know the logistics of our government purchasing firearms, but I suppose a purchase order from the DOD would be appropriate, but that is the government owning the firearm, not the military member using it.
Moot point. Our boys use PGW![]()