Yeah...the "new and improved" website again. Now it is only listed under the "Pick your Kit" tab. Kit 1 is the one standard fork and plate. Kit 2 is the QLS 19 Fork and the QLS 22L Plate. Used to have a description on the page of what that is. Appears to be the only way it's listed now.
I've had better luck getting my Safariland stuff from Copquest.com. It's where I've bought most of my Safariland accessories. Looks like they list it on the website if you go to the Holster Accessories page and search QLS 22L.