I sent Paypal the question (using a different email than the one linked to my account). Here's their robo-reply:
Thank you for contacting PayPal’s Compliance Department. We have received your email and will update you when your account has been reviewed.
You can check the status of your PayPal account at any time by logging into your account and visiting the Resolution Center.
We may try to call you about your account, so please make sure that the primary phone number on your PayPal account is correct. Here's how to update your phone number:
1. Log in to your PayPal account.
2. Click "Profile" near the top of the page.
3. Click "Update" beside Phone.
4. Select the phone number you want to change.
5. Click "Edit" and make your changes.
6. Click "Save."
PayPal Compliance Department
PayPal, an eBay Company
Please do not reply to this email address as it is not monitored and we will not receive your response. You can get in touch with us by clicking "Contact Us" at the bottom of any PayPal page.
If that's the best they can do, I see myself as having latitude to interpret their policy -- If they somehow flag the sale, I can tell them that I tried to get help. The mags, after all, are factory mags, but they are above the CA (and now idiotic NY) limit.