OK, i must not understand how to use that website. I looked at Cheaper Than Dirt's link and it was a facebook page that seemed to reflect a policy matching against supplying LEA's with arms restricted by things like the NY "SAFE" act, BUT when i clicked on the link for Rock River Arms, it seemed to go to their product page. A bit of looking on their website led to this page regarding LE sales: http://www.rockriverarms.com/index.cfm?fuseaction=page.display&page_id=19
That page seems to indicate that sales of restricted capacity magazines to LEA's simply require some paperwork.
Edit* Now i think i understand, the RRA link on the loophole website leads to a page indicating that they have suspended ALL sales to NY state (presumably residents and LEA's) until the SAFE act can be figured out.