Check out our video of the XRail by RCI Shotgun Magazine Extension System we took while at the 2010 SHOT Show. This is a great idea for military, police, home defense, or open class competition shooters.  XRail has a magazine or adapter to make one of their high capacity systems fit just about any popular shotgun. There are options; you can increase your round capacity by just a few, or load more than an entire box of shells with the 30+1 magazine.  The magazines have a unique  auto-indexing feature that automatically rotates the feed tubes while you shoot. To learn more visit http://xrailbyrci.com/