The front sight base is held on by taper pins that have to be driven out. The front sight tower is also the gas block which is necessary to the operation of the rifle. We do offer what is called a "V-Match" barrel in which the sight tower is shaved off for use with optics. We also offer that service here if you want to have us mill off the front sight tower. Our charge for milling and refinishing sight bases is around $50.00. There are also other options such as gas blocks with front flip sights that allow you to still have an iron front sight. You can find those in our online store here.