I took a look at the page... They didnt state anywhere on the page that they were automatic so I figure they're likely just 'single shot' caribines.
There's a whole bunch of technical/legal issues regarding the assault rifle ban of 1994 (regarding pre/post ban rifles)... frankly I dont know much past what I've read on the internet so while I could comment, I dont think I'm really qualified to do so... but you might want to take a look at
this page which was just a quick google away.
Further information regarding can be found
in this faq from the same site as the last one..