Ed Kern | How to Change the Front Sight on a Ruger SP101 - By Ed @eddiekern | Uploaded 12 years ago | Updated September 30 2023
Things you'll need:

1/16" Drill Bit
1/16" Steel Punch
Soft face Mallet
Blue Loctite
Vice with Soft Jaws (Flexbar soft jaws ~ $20)
New Front Sight (Trijicon RR14F ~ $45)

Don't do this with a metal hammer, you'll probably just mar up your gun. You can also use a brass punch, but I bought a low quality steel punch at harbor freight, and immediately buckled the thing. I bought a three piece steel punch set at home depot for less than $10, and it worked great. The new sights are a lot more accurate than the factory sights. The factory were 3 inches low and 1 inch left at 15 yards, new sights are 1/2 inch low at 10 yards (158 grain, no-name .357 magnum rounds). Also the groups with the new sights are much tighter due to better sight acquisition.

Cheers,

Ed