Click on the grey button next to the "Site Navigator" window above. A list of sites will drop down, including the AK site. Use the cursor to select the AK site which will be in blue background when selected, then left click. "AK" will now appear in window instead of "Site Navigator". Now, click grey "Go" button next to "Site Navigator", and you're there.
"The M1 Rifle is the greatest battle implement ever devised." General George S. Patton Jr.,US Army