While clipping coils for the thread regarding modifying the P22 to handle subsonic rounds I was looking at three extractors I had laying about. One of the originals, one original I decided to peen on and one of the new ones....I decided to peen on too..
Going back seven or eight years ago when I was studying what was causing poor ejection direction I found that it was the large gap between the extractor tip and the rim of the round. Above is a picture of the revised extractor Walther manufactures and has been installed in the P22 since about '06 I'd say. As you can see it doesn't quite close the gap, neither does the VQ model. I had sent them all of the info along with pictures and asked them to make an extractor that would close down the gap, they did.....they just didn't close the gap either. So with a couple of original extractor sitting there I though I'd peen one, take pictures of the original stock one, an original but hand peened one and the new model. Then I'd peen the new one which proved difficult in the past.
Above are three extractors. The one on the right is an original square cut one. The one in the middle is an original that has been peened to bring the face rearward in order to reduce the gap between extractor tip and rim. The closest extractor is the new one. All of these are Walther P22 extractors. As you can see peening moves metal toward the rear, shortens the hook height and creates a very sharp edge. These work very well, better than the new model when peened properly.
The new model has a couple of problems from my experience. First while Walther extended the tip to reduce the gap they didn't reduce it enough. There is a reason for this, the P22 is sold world wide and must fit all rim thicknesses. OK, fair enough. The other problem is that the longer hook reaches in too far and pushes the rim off the center of the face of the breech block. This is of no consequence when firing or hand extracting but can play havoc with ejection direction. Notice that the tip is neither sharp and actually has a slight "S" shape to it where the tip is moved back away from the hook of the new shape.
So, I decided to peen the new one too. I recommended against this originally because the new shape has no supporting metal under the tip and is easily broken off. How do I know this.??? So on this one....I determined to tap very lightly.
Above are two peened extractors including the new one which now has less reach, a sharper tip and less space between it and a rim. Not particularly square peening but my bricks and rocks are getting old.
Both have a nice, sharp hook now and will be lightly polished on the rear side where I was hammering with some 600 grit emery paper.
Reinstalling the peened new style extractor has all but eliminated the gap. Test firing showed excellent ejection direction. The tip is no longer pressing the rim off center on the breech face. If the P22 had the same breech face of the new Walther made S&W M&P 22 then it wouldn't matter if the extractor pressed against the case. On that pistol the rim is nicely enclosed and held in place. So, Walther knows how to do it.....hint, hint, hint.... M1911

Going back seven or eight years ago when I was studying what was causing poor ejection direction I found that it was the large gap between the extractor tip and the rim of the round. Above is a picture of the revised extractor Walther manufactures and has been installed in the P22 since about '06 I'd say. As you can see it doesn't quite close the gap, neither does the VQ model. I had sent them all of the info along with pictures and asked them to make an extractor that would close down the gap, they did.....they just didn't close the gap either. So with a couple of original extractor sitting there I though I'd peen one, take pictures of the original stock one, an original but hand peened one and the new model. Then I'd peen the new one which proved difficult in the past.

Above are three extractors. The one on the right is an original square cut one. The one in the middle is an original that has been peened to bring the face rearward in order to reduce the gap between extractor tip and rim. The closest extractor is the new one. All of these are Walther P22 extractors. As you can see peening moves metal toward the rear, shortens the hook height and creates a very sharp edge. These work very well, better than the new model when peened properly.
The new model has a couple of problems from my experience. First while Walther extended the tip to reduce the gap they didn't reduce it enough. There is a reason for this, the P22 is sold world wide and must fit all rim thicknesses. OK, fair enough. The other problem is that the longer hook reaches in too far and pushes the rim off the center of the face of the breech block. This is of no consequence when firing or hand extracting but can play havoc with ejection direction. Notice that the tip is neither sharp and actually has a slight "S" shape to it where the tip is moved back away from the hook of the new shape.
So, I decided to peen the new one too. I recommended against this originally because the new shape has no supporting metal under the tip and is easily broken off. How do I know this.??? So on this one....I determined to tap very lightly.

Above are two peened extractors including the new one which now has less reach, a sharper tip and less space between it and a rim. Not particularly square peening but my bricks and rocks are getting old.

Both have a nice, sharp hook now and will be lightly polished on the rear side where I was hammering with some 600 grit emery paper.

Reinstalling the peened new style extractor has all but eliminated the gap. Test firing showed excellent ejection direction. The tip is no longer pressing the rim off center on the breech face. If the P22 had the same breech face of the new Walther made S&W M&P 22 then it wouldn't matter if the extractor pressed against the case. On that pistol the rim is nicely enclosed and held in place. So, Walther knows how to do it.....hint, hint, hint.... M1911