Adding text {incorrectly, I might add} to the above mags in NO way makes them a pistol mag.
This was a major fail by both the CBSA as well as the importer, and especially the importer, which in my view was grossly negligent in its duty of care to ensure the importation of a legitimate product that would withstand the stringent tests they ought to have known to exist.
That said, I'm sure that all will be forgiven once they make good on this.