All three of the DA "Six" series revolvers were available with the 2 3/4" barrel.

I have over a dozen of the Sixes, I like the Service and Speed Sixes a lot better, I like the handling and looks of the fixed sight Ruger Sixes.....they have that "meat and potatoes service revolver" look.

That gun will last forever, there's not much you can do to hurt a Security Six short of beating it with a sledgehammer, and maybe not even then. These are tough guns built for a steady diet of .357.