Science of vaping offers glass conversion kits for the authentic kayfuns as well as the russian 91%. I just added myself to the list to get one. Anyone have one or know how they perform?
http://i1215.photobucket.com/albums/cc518/RTM355/newvape_zpsb2259bd3.jpeg
http://i1215.photobucket.com/albums/cc518/RTM355/newvape_zpsb2259bd3.jpeg