Hi,

Hoping you guys could help me shed some light on why a K-38 double action would not be working. A double action trigger pull will spin the cylinder but not cock the hammer. However the hammer seems that it still wants to "fall" at the end of the trigger pull.

If I put the revolver to half cock and let the hammer fall back forwards the double action pull will work for the next chamber.

Please help I am stumped and just got the gun today. (this was supposed to be my reliable gun )

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Some of them were made as single action only. Just a heads up

While there were quite a few K38s made SAO, it sounds like the small coil spring that holds the DA sear out in position for the trigger to catch is either missing, or broken.

Do these pictures help shed light on what you were saying? You can see the piece which is not fully resetting allowing the trigger to go into DA.

The are in a succession. First picture DA works, second hammer is obviously cocked, third that chamber has "fired" and the problem persists of the piece getting hung up.

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Trigger isn't returning fully forward for some reason. Discernable in the photos.

The trigger is returning fully, close comparison between the first and last pictures show that. The problem is that the DA sear is not resetting and I suspect that the reason is that it hasn't been "fitted". In the Numrich Manual he mentions chamfering the lower front of the DA sear when fitting a new sear and as I found when installing a new hammer in my 625 that little chamfer is ESSENTIAL. Fail to add the proper chamfer and you have a lockwork that won't reset consistently for Double Action. Take a look at your first and last pictures and you'll see the difference between a fully reset sear and one that hasn't fully reset.

What you need to do is add just enough of a chamfer to the bottom front corner of the DA sear to allow it to completely reset every time you pull the trigger. BTW, it doesn't take much, typically about 1/32 inch but it is essential.

I can clearly see in the third pic that the bottom edge of the DA sear is not forward enough for the top of the trigger to push up on the hammer. It may be either a weak spring, or the leading edge is hanging up on the trigger, as Scooter suggested. Either way, it's a fairly easy fix.
Here's a diagram, although they're difficult to see, the parts I'm referring to are, #49 & 50. You can take a small tool & push in on the sear to test spring function, without further disassembly.
Here ya' go:http://www.gunpartscorp.com/Manufact...770.htm?page=4

To be sure it isn't causing the issue, remove the trigger stop and see if DA works. Sometimes the stop will rotate and cause problems.

Remove hammer, remove DA sear carefully, stone front-bottom end of sear a few thousandths, reassemble, test. Tedious, yes, and you may have to do this several times to get it right. Go slow - take too much off the sear and you end up with a "lumpy" DA or, at worst, a jamming condition w/no DA at all.

Hope this helps,
Larry

I agree with Broker here, It looks like the DA sear is not returning fully to it's idle position, probably due to a worn spring. You should be able to find a replacement on brownells or numrich.

You can clearly see that if the trigger is pulled the sear isnt out far enough to catch the double action surface on the trigger to start pulling it up

But for the time being, take the sear out, carefully stretch out the spring a little bit, it might give it a little more life before you can find a replacement.

here is a photo I pulled off google, you can see how much further out the sear should be sitting in it's idle position.