Thanks to everyone for your help.

Well this was a interesting post for me.

I asked the same question on 4 different gun sites to gather as much info as I could.

I got every answer under the sun - here are a few :

If you have to ask how, you are not qualified.
It's easy anybody can do it .
Use a Dremel on low speed.
Don't let a Dremel in the same room with a gun.
Dremel tools are the reason I don't buy used guns.
Use a Dremel with the felt pad and the red polish (jewelers).
So, my 4 1/2 inch angle grinder.... too much or just right?
Use car polish.
Use toothpaste and a q-tip.
If it aint broke, don't fix it.
It's a 20 minute job.
It will take a long time if done right.
Use wet and dry 600 or 1000 wet dry paper on a dowel.
Use Fitz Polish or Mother's Mag Wheel Polish or use a little Clenzoil

And on and on.