[4 eyed six shooter]

In the picture, you can see the peening on the firing pin on the edge between the two cut flats on the side of the FP. What causes this and how can it be prevented. I have seen light peening in this area before, but never this bad. There was a burr that I removed prior to the picture being taken. It is a LEO's duty gun, so I ordered a new FP.
http://img.villagephotos.com/p/2003-11/498676/THRUD-DSCN0300.JPG

Thank you, John K

[Jim K]

I hate to make too much of a diagnosis based on a picture, but the firing pin damage may be only a symptom of the problem. It looks like the firing pin is hitting the firing pin stop, which indicates it is being released before the stop is pushed up and out of the way. The problem could be in the firing pin, in the trigger bar, or in the stop.

It is possible that the problem was from the factory, but it is extremely unlikely. It is more likely that someone tampered with the pistol, probably trying to reduce the length of trigger pull without fully understanding what is involved. The result would be misfires and in a duty gun that could be very serious.

(If you are a police armorer, I strongly recommend you report the incident and initiate an investigation. If the pistol was tampered with by either the officer to whom it is issued or a previous user, he may not understand the full consequences of his actions. In any event, some disciplinary action needs to be taken; an officer could have been killed as a result of his pistol misfiring.)

Jim

[HSMITH]

I agree that it is hitting the firing pin stop. I would almost bet that the stop is not fully depressed like it should be when the pistol is in battery.

Check the new firing pin after a couple boxes of shells, if it is starting send it in. Glock will replace all the guts and try it again, then if it still happens they will replace the gun. Glock does not mess around when the gun belongs to a LEO.

[4 eyed six shooter]

Thanks guys. I thought it may have something to do with the stop, but saw no signs of any metal moved on the FP stop. It would appear that the stop is not being pushed in far enough to clear the FP by the trigger bar. I didn't see any signs of tampering, and it is a newer gun. Sending it back to Glock might just be the best answer. You guys were right on the money as usual. Thanks for the help.
Good shooting, John K

[Nero Steptoe]

If there's metal peened on the striker, there'd be clear signs of where the striker's hitting the striker safety. Could be bad metallurgy in the striker, or somebody's dryfired a few thousand times.

If the striker safety spring isn't correctly installed, the striker safety will bind, providing for a horrible, very noticable trigger pull. If the ttrigger bar's bent where the trigger bar engages the striker safety, then the striker safety might not move correctly, the fix being a really cheap trigger bar replacement.

[Jim K]

To be a bit more specific on possible causes, this is usually the result of someone shortening the tail of the striker, causing it to release before the trigger bar pushes the striker safety up out of the way. That work is the result of someone attempting to reduce the length of the trigger pull.

I haven't checked this, but I think that safety block is harder than the striker, and might not show the same peening.

Jim

[Traveler]

This is indicitive of a poor attempt to work the trigger, or the parts are out of time. Either way, I have only seen this on guns someone has "worked" over.

The trigger bar has been "polished, and the loss of metal there keeps the inertial block in the way of the striker when it moves forward.

You would be better off replacing the trigger assembly.

[4 eyed six shooter]

I ordered a new FP and trigger bar. Jim, I have seen damaged fp blocks also. BTW, don't order a Glock FP from GPC. The idiots sent a FP without the upgrade cut in in, one of the old style ones, all for only 38 bucks. I'm sending it back. Jack First has the good ones. Glock takes three weeks to get parts from. Great customer service?
Good shooting, John K

[C. H. Luke]

Not discrediting the previous posts but it does not take too may hits from the striker on the safety plunger to raise a burr like that.

FIW, A lot of guys don't know that you can not pull the striker to the rear and let it fly {with the slide off the reciever} and not expect it to smash right into the plunger.

[4 eyed six shooter]

Thanks for taking the time to give all the info guys. I hope everyone has a great new year.
Best wishes, John K