I only have model 27s, so I am not certain, but I do not believe that target triggers or target hammers were factory options on a Model 28. I know that the 27’s finish is a lot better. I have always thought(imagined?) that the 27 has a smoother action, but I may be delusional. In my opinion, the serrated rib on the 27 looks a lot nicer than the plain matt ribon the 28. RJ Wanna kill these ads? We can help!