Tyranid Hunter-Slayers

Last month I was so lucky to get some ancient Tyranids cheap on ebay. Ten Hunter-Slayers for £1.20. I actually only found them because I was looking for some Zoats. This perticular seller had some Zoats for sale and when I won that auction I decided to bid on some of his other auctions too and so I also won the Hunter-Slayers. The old Tyranids are a great alien race for 40K or could probably