In more detail, we know the 97 needs a taller rear than the 75. The tfx sights are for the 75. The rear is very much tooo short. I installed them on my 97 and it shot very low so I removed the tfx rear and installed the #8 cz sight that came with my 97. With the tfx front and cz rear it shot 4? low so I installed a cz#12 rear for the 97 and it?s dead nuts on. The tfx rear needs about .140 more height. I?m working up a riser block for the rear tfx. The front tfx is great for combat but too large for a target sight.