My M640 was my first S&W stainless revolver.
I had read so many gun articles claiming stainless steel was hard to machine, hard to polish, therefore stainless revolvers would NEVER have the capability to become as smooth, action-wise, as a carbon steel model.
My M640 has as smooth an action as any S&W revolver I own and it shot to point of aim at 25 yards with 158 grain bullets, my load of choice.
I think it is the perfect concealed carry handgun.
And I now buy stainless S&Ws as soon as I can afford them.
