I also hate the FO sights.Too darn big and fragile.
If you have a 150 gr Extened range ML,you might find the Williams Peep won't go high enough to use the front FO sight if you are using a 100 gr load.
I ordered another FO one from TC, but Brownells carry them also. This was a 1 screw sight identical to what was on the original gun,but a diferent height. I cut the FO part off, and then filed down the remaining base to get a nice square blade about 1/16" wide. Now my Williams sits right at about 1/2 way thru the height adjustment dovetail.I was out shooting last week and could hold 3 shots within a 2" group at 100 yards , evenwith my old eyes.
When hunting I take the screw in aperature out and just use the threaded hole.