it is not surplus. Back in the '90's ivi produced a batch of 5.56mm that was rejected during acceptance testing by the canadian forces, due to the bullet jacket stripping off in the barrel. Ivi was authorized to "dump"(export) this ammo out side of canada. Unfortunately some of it made it back to canada by bc target shooters. Buyer beware, this could be similar.
but the add states 2016 production date,,