There was a similar inquiry about JP Sauer sixguns a couple months ago.
To summarize, I've had shooting access to several of these revolvers and repaired an equal number. They are serviceable guns if used lightly. By that, I mean after a couple hundred rounds each, they shared the following shortcomings: excessive cylinder endshake, front sights come loose, ejector rod housing screws come loose, ratchet and pawl wear excessively, firing pin and bushings get peened, triggers and sears wear rapidly, and grip frame screws shake loose.
Yes, I am aware that the original Colt SAA design is prone to all of these faults, but in the case of the Sauer, the indications are improper heat treating, sloppy threads, and poor materials. The rimfire versions use cast zinc alloy for the cylinders and barrels. The centerfire versions in .357, .44, and .45 Colt can NOT be compared in quality, fit, or finish with the Ruger products.
These guns were built to meet a price objective, and the importer, Hawes Firearms of Los Angeles, California did a brisk business in the late 1960's thru middle 1970's when they were imported. The various versions were rather gaudy(nickle plated with pearl grips "Silver City Marshall", blued with brass frame and rosewood grips "Montana Marshall", etc) were called "the Poor Man's Commemoratives" by Guns and Ammo Magazine.
I'm not suggesting that they are bad revolvers, just that they did not hold up to extensive shooting. I owned one myself and shot the hell out of it for several years. I simply got tired to repairing it.