divingin
Gold $$ Contributor
Perfectly legal. Most stores that sold them purposefully kept no records.
No requirement for them to keep records.
And yes, they are legal to use for the time being. Any further ban would have to retroactively make the legally purchased hi-cap mags illegal, which is kind of unlikely (though you never know here in Calif.) Reinstating the prior ban would allow them to continue to be used, as far as I can tell.