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Old June 13, 2010, 10:33 AM   #1
cbrabham
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Join Date: April 16, 2010
Posts: 25
Ruger MkIII stovepipe jam fix

My Ruger Mk III pistol was prone to stovepipe jams. It would get one and sometimes two of them in each magazine full of ammo.

I kept asking around different forums until somebody told me that the magazine could be modified to fix this problem.

There are two pairs of lips on the magazine, separated by a gap through which the rim of the case rises while feeding. The rear pair of lips have a squared-off edge that the case sometimes contacts after firing, before it has a chance to move backward far enough to hit the ejector.

When this happens, you get a stovepipe jam.

By rounding off and polishing the front edge of the rear set of magazine lips, this problem is eliminated.

I rounded and polished the front edge of the rear set of magazine lips with a Moto-Tool and some #400 grit wetordry sandpaper, and polished the upper edge of the front set of lips. - After that, no more stovepipe jams!

In the picture which follows, two magazines are shown. Both have the follower held down and out of the way with a toothpick. The rearmost clip is stock, the one in front is modified.

{ Click the image to see it magnified. }

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Old June 13, 2010, 10:40 AM   #2
longlane
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Join Date: November 13, 2009
Location: South Carolina
Posts: 148
thanks for the fix!

Everyone that I know loves their .22 rugers--mine's been a bit of a jammomatic. Will try fix soon.
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