I have mecgar target sights on my cz75b. They are not low profile, the front sight is probably twice as tall as the factory one. I dont carry so this isn't a problem. The sight picture is great, much better than the factory sights. Two weeks ago I won a local pistol match with my cz and my newly installed sights. The slide doesn't need to be machined with these sights. Let me know if you want a picture of the sights mounted on my cz emailed to you.