you could just use the fixed adhesive helmet mount (that comes in the box i think), that would work.
http://store.contour.com/ae/international/mounts/profile-mount/invt/4165&bklist=icat,4,shop,products,mounts&bklist=icat,4,shop,products,mounts
Or you'll need to get:
http://store.contour.com/ae/international/mounts/picatinny-mount/invt/3900&bklist=icat,4,shop,products,mounts&bklist=icat,4,shop,products,mounts (the contour "PICATINNY MOUNT".
and then mount that on:
http://www.shootercbgear.com/product_info.php?cPath=22_41&products_id=3992