You will need to change both the front and rear sights and a special tool is needed to stake the front sight.

Please select a best answer. Also please note that the 1st answers given are at the bottom of the thread. You can help us by not selecting answers from people who just cut and paste earlier answers to get the credit for the work done by another poster. You can select more than one best answer by opening the question in multiple windows/tabs (before selecting best answer) then selecting a different answer in each window/tab

you can but you are very limited in the sights you can install. I don't know of any adjustable sights that will fit the GI style cut

Alan, the rear sight replacement will not require a gunsmith for the GI Model. Details here : reloaderaddict.com/best-rock-island-1911-sight-upgrade-night-sight-replacement-armory-review/