Originally Posted by bluestem
What is the difference between the SW 65 and 66?

The 65 has fixed sights and exposed ejector rod, while the 66 has adjustable sights and an underlug protecting the ejector rod.

The 65 is essentially the bull barrel, stainless, Model 10 in .357 Magnum. The Model 66 was designed to look like a miniaturized Model 27.