I've not read through all the replies but what stops a person from claiming their 30rnd 5.56 mags are actually 450 bushmaster mags?
I don't think the law will stand.
That said if you have a box mag fed gun and a mag that will hold 30 rnds of the ammo for your gun that you bought after December 8 then you would technically be in violation.
I think.
John Burns
I have all the sources. They can't stop the signal.