Originally Posted by 12fretter
Can you replace the sights yourself or does that need a gunsmith?
They make a sight pushing tool for the rear. Not sure how the front is attached on a Gen 4.
On Gen 3 and earlier guns I've changed my own sights with a padded vice to hold the slide and a Delrin punch, and duct tape to pad the sight and slide while I drifted it in with a hammer. Sometimes a fine file or polishing stone is needed to get the sight ground down just a bit to be able to get it started, but don't get crazy and take off too much metal or you will have a loose sight.
The from sight on the gen 3 and earlier guns usually comes with a screw and a wrench along with red loc-tite. Fairly straight forwArd for changeing out. At have to apply a little heat to the old sight if it has loc-tite already on it.