Originally Posted by Dvrjon
Your biggest initial problem may be with responding law enforcement. They may see the mag and take you in for further discussions. You may also be asked to show that you owned the weapon prior to Jan 1, 2000. If you didn't (and the OAG Registry records you didn't) your day will worsen.
Red herring. One could technically own mags for a different handgun, and not the one carrying (which can be acquired past 2000). No legal requirement to prove one's innocent, the burden of proof is on the prosecutor to prove a crime has been committed. Not to mention there has not been any case on this specific topic yet. If leo ask you anything, have them talk to your lawyer.