Stumbled upon this seller's wares on ebay this AM. Worth taking a look at his listing as these items could easily be sold as genuine field or rigger modifications at some point. My thoughts only .....
http://www.ebay.com/sch/wbtactical/m.html?item=121700265280&hash=item1c55e6ad40&pt=LH_DefaultDomain_0&rt=nc&_trksid=p2047675.l2562