SN-15 PalmOS AR-15 Serial Number List
This is a simple PalmOS application that contains all of the information that I could find on the serial number ranges for various AR-15 manufacturers indicating whether or not the rifle is a 'pre-ban' rifle or not.
Select the manufacturer from the popup menu and all of the information that I have found for that manufacturer will be displayed in the main screen, if it is too large to fit on one screen the scroll bar will be enabled, use it or the up/down buttons to scroll the information.