I asked the same question here a couple weeks ago for my 1026 (same frame, same sights). Between the answers there and some additonal research, I found a variety of options:
Novak would probably be the most common. I gather that they (or someone there) had a hand in developing this frame/pistol although I can't find any positive reference to that.
Champion Sights makes some for 1911 that look like they might fit, although all their fronts seem a little short to me.
PT/MMC Sights makes both fixed and adjustables for this Smith series.
Meprolight (my favorite) makes the set ML11755 for this series and is probably what I'll get after checking sight heights.
One of the issues that you'll encounter is that, during the period in which these pistols were made, S&W was still shooting each one and putting on sights of the correct height to make POA and POI coincide. They had some 8 (so I've been told) different heigth front sights.
The aftermarket guys, in general, can't afford (or be bothered) to make the same range of sight heights for general consumption, so they make the most common. The exceptions to this might be Novak and Champion. If your sights fit the "most common" you're probably good to go. Otherwise, you're probably better off talking to Novak.
Since they are my favorites, I corresponded with the tech guy at Meprolight(Kimber here in the US). He says that their heights for the model noted above are 0.260" front and 0.480" rear. I haven't yet measured mine to see what I've got.
Just a final note. None of the ones I listed (except maybe Champion, which is an unknown to me) require "machining" in the sense of a different dovetail. Almost all, however, will require some "fitting" since (in my experience) all the aftemarket guys make the sight dovetail a little too big for the slide dovetails.