I don't believe that the newest 336's are drilled/tapped for a Williams receiver sight. You may need to get a taller front sight, but you won't know for sure until you sight in. You can get an XS scout rail which employs the front two scope screw holes and the dovetail slot for the factory rear sight. Then get a scout scope from Leupold or Burris. In my opinion, the Williams sight that you are looking at is the best option for making those on the fly adjustments.Anyways...I'm not a professional gunsmith or a rifle expert but A) is this something I'll be able to install myself, B) is there a different/better product that will fit the needs I laid out and finally C) does installing this sight set eliminate the chance of putting a scope on from time to time for long distance duty?