email tantal at firstname.lastname@example.org
tell him the rifle/model and optic you wish to fit the optic rail to. he will get back with prices and advice as to the best style rail and optic.
it's simple, one stop shopping from there...with the best customer service in the industry to back up the goods.
installing the rail will test your deodorant! lol! but it isn't all that tough. most competent smiths will ask a fifty for the job. the only part requiring any degree of accuracy is getting the rail on parallel to the bore axis. and thanks to unusually wide range of adjustment built into commie optics, even this is no ultra-critical.