Thanks EK
Since many of the typically available Hawkens, plains rifles, mountain rifles, etc. are specifically not allowed, I was hoping this would fit the bill. It does have an adjustable rear sight, but the graduated ramp can be removed. Thus I have an open rear semi buckhorn sight that is acceptable.
I plan to shoot this rifle along with a pair of Italian steel frame cap and ball Colt or Remington replicas...even my pair of Whitneyville-Walkers. With this rifle and revolvers I could develop the impression of a Texas Ranger in Mexico in federal service during the Mexican War OR on the Texas frontier.