These are the most useful tools for maintaining the O-Frame.
Wheeler Engineering Bench Block
http://www.midwayusa.com/eproductpag...720&t=11082005
This bench block is handy for the strategically located holes for the O-Frame and slots for holding the slide.
Extractor Removal tool
http://www.brownells.com/aspx/ns/sto...REMOVAL%20TOOL
On one end, there is a fancy punch for pushing the firing pin in to remove the FP stop. It is stepped so the punch can only go in far enough to push the FP out of the FP stop. The other end is curved so you can push the extractor out without hitting the slide. You can get by with a punch but this makes life a little easier if you plan to pull the extractor and FP out for routine cleaning.
Mainspring Housing pin tool
http://www.brownells.com/aspx/ns/sto...G%20PIN%20TOOL
The mainspring housing retaining pin has a dimple on the driven side. This tool has a matching radius and the shaft diameter is the same as the pin.
Screwdriver set
http://www.brownells.com/aspx/NS/sto...WDRIVER%20SETS
This is a good set to have in your range bag. It comes with all the bits for the O-Frame. Brownells also makes them for other guns. This set comes with an attachment for driving out the mainspring housing pin.
Grip screw bushing bits
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=493&title=MAGNA-TIP~%201911%20AUTO%20BUSHING%20DRIVER?%20BITS
This is only needed if you plan to work on the grip screw bushings.
10-8 Armorer's Tool
http://10-8performance.com/Merchant2...ry_Co de=Tool