Tikka is owned by Beretta, which owns Sako and Burris now, too. So Beretta sells package deals, and add-ons, and Burris rings and scopes. Most Burris scopes are made in the plant in the Philipines, whereas the older ones were made in Colorado. Some of the older Browning scopes were made in the USA by Swift, which uses Schott glass.
Update: I talked with a friend who runs a large gun store, dealers for Leupold, Zeiss, Swarovski, Meopta, Minox, Nightforce and Bushnell, mostly stocking the higher end of all of those. They are a SIG Sauer dealer, and have rifles but none of the scopes, yet. He said the Tac6 line is made by Light Optical Works in Japan, and the Tac4 made in the Philipines. Design is in the USA by a former designer for Leupold upper end tactical scopes. That is what he was told at the SHOT Show.