I recently purchased two S&W mil-dot scopes, the 4-18x42 and the 6-24x42, and think they're a bargain for the price. They are made by Hakko, a well established Japanese optical company, and there is some info floating around that they are, "made in the same plant as Nikon scopes."
Nikon has several different lines, made in different places, and it is possible that Hakko might make one of the Nikon models for Nikon. In any event, Hakko scopes scopes are made in Japan, not China, or some other other country known for lesser manufacturing standards.
As an OEM, Hakko makes scopes to the specs of their buyers, both good and bad. They supposedly make the Springfield Armory scopes as well as the Tasco Super Sniper scopes, among others. The Hakko line of scopes is broad and is very popular in Australia. Except for a few models, they are not currently distributed in the U.S.
Checkout the Hakko website for more info on what they offer: http://www.hakko-japan.co.jp/optical/english/indexe.htm
Since Smith & Wesson has discontinued their line of scopes, they have been sold on eBay for bargain prices. I paid $149.00 for my 4-18x42 scope and they have gone for as little as $138.55 recently. The 6-24x42, which had a MSRP of $619.99, has sold for $170.00 on eBay.
One last note; I called S&W about the warranty for these discontinued scopes. They said they will continue to honor the lifetime warranty.
[ 05-15-2004: Message edited by: redshanks ]