I have the squeaky trigger

[Decado]

I just got a tungsten CM9, it has the squeaky trigger, I saw a thread here where the issue got resolved by taking off the side plate and sanding the bar, I'm wondering is there a way to do this without messing with the side plate?

[Bawanna]

Not very effectively. I think you can see the bar and spring from the top with the slide removed, but not much room to clean up or polish.

You could apply a bit of grease to the top of the bar from above and it should cure itself given time. Basically just wear it's way in.

No trick to removing the side plate other than just snugging the screw when you put it back on so you don't strip the polymer threads.

[Decado]

That's what I thought, thanks man for taking the time to reply.

[Ed M]

If you're looking at the trigger bar and spring from above, the offending contact area is on the bottom of the trigger bar. You can do as Bawanna suggests, and in time it should get better, or....

You can put a dab of automotive rubbing compound, polishing compound, Softscrub cleanser, or even toothpaste on it. Work the trigger a whole bunch, and it'll get smoother. The idea is to use the abrasiveness of whatever stuff you use to speed up the smoothing out process.

When you're satisfied with the smoothness of the trigger action, use a wet toothbrush with a drop of dish soap on it to clean off whatever you used to polish the contact area, rinse off with water, and let it dry. Wouldn't hurt to lube up with grease or oil when dry.

[zamboni]

My trigger squeeked when new. I don't know how many rounds it took. All I know is that it fixed itself.

[Decado]

Thanks everyone for replying!

[OldBoldPilot]

I had the same problem with a new MK9 Elite 03. Sent it back to Kahr on their dime (they emailed me a Fedex label). They fixed it and had it back to me exactly one week from the day I shipped it. Simple.

I'm a retired military and airline pilot. I flew them, and left fixing them to the professionals after I pointed out faults. Same with guns. I shoot them, I don't repair them. I leave that to the pros.

[gb6491]

I had the same problem with a new MK9 Elite 03. Sent it back to Kahr on their dime (they emailed me a Fedex label). They fixed it and had it back to me exactly one week from the day I shipped it. Simple.

I'm a retired military and airline pilot. I flew them, and left fixing them to the professionals after I pointed out faults. Same with guns. I shoot them, I don't repair them. I leave that to the pros.
LOL, I couldn't help it, I read your last and A799 just popped into my head. No disrespect intended, just thanks for bringing back some memories from my active duty days. :)
Thank you for your service.
Regards,
Greg

[OldBoldPilot]

No problem. Even considering the difficult parts, I'm sure that if we could just go back to those active duty days for, say, one day, most of us would jump at the chance.

[senor_diaz]

It's really easy to sand the bar. I did the bar where it makes contact with the spring, as well as the inside of the spring. Smooth as glass now.

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[br1962]

I had the same problem with a new MK9 Elite 03. Sent it back to Kahr on their dime (they emailed me a Fedex label). They fixed it and had it back to me exactly one week from the day I shipped it. Simple.

I'm a retired military and airline pilot. I flew them, and left fixing them to the professionals after I pointed out faults. Same with guns. I shoot them, I don't repair them. I leave that to the pros.

I wonder what Kahr did to it that might have been different than what's been described here? I purchased a new CM9 last week and have the same issue, although it does seem better after I put 175 rounds through it over the weekend.

[OldBoldPilot]

I wonder what Kahr did to it that might have been different than what's been described here? I purchased a new CM9 last week and have the same issue, although it does seem better after I put 175 rounds through it over the weekend.

Answer: Probably nothing (except I'm pretty sure they didn't use toothpaste!). If I'd been more patient and just shot it more, I'm sure the issue would have resolved itself. But my other Kahrs spoiled me. :)

[br1962]

I got my return authorization from Kahr yesterday and they state there is a 4 week turn-around on repairs, which seems excessive. I like to have things repaired correctly but I've never had to return a gun to the manufacturer before. Guess I'm lucky. It's disappointing since the trigger is one of the main reasons I bought a Kahr in the first place.

[Bawanna]

Those turn around estimates generally are worst case scenario. Generally (not always) it's much sooner than they anticipate.

[pist]

It stands to reason that lubricating it would only make it take longer to break in.

[finpro]

It stands to reason that lubricating it would only make it take longer to break in.
I agree. I think it is better to polish the contact points first and then lubricate. I have had good experience with polishing metal-on-metal surfaces by wetting them with "sharpening oil", also called "honing oil" or "sharpening stone oil", and working them a hundred or so times. Sharpening oil, which is used on sharpening stones to clean metal scraped from blades or whatever is being sharpened, seems to gently abrade metal from where surfaces meet, usually leaving a polished surface. When the polishing is completed, it should be removed with lubricating oil or just washed off. Sharpening oil is cheap and available at most hardware stores.
If the source of the squeaking is the trigger spring, use this to polish the mating surfaces of the spring which rubs against itself as the trigger is pulled.
It also works to sharpen things like hair clippers or beard trimmers when poured into the moving blades for a few seconds. It leaves a much shinier surface that mates better and seems to operate faster. Again, this is not a lubricating oil and should be removed when the polishing is completed and replaced by a lubricant. It is very interesting stuff.

[bbjwho]

In February I sent my new CM9 back to Kahr to address the squeaky trigger, failure to lock the slide open, and flaking inside the new barrel. It came back in about 10 days with a new barrel and the slide lock worked, but the trigger was still squeaky. The receipt said they polished the trigger but subjectively it sounds at least 80% as loud as before.

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[br1962]

Surprisingly my gun was returned today. One week to the day from shipping it to Kahr. The trigger noise is much improved but not completely gone. I'd say 75-80% improved. I'll just shoot away and if in another 200 or so rounds it hasn't smoothed out completely I might try the polish job myself. The repair invoice says trigger bar polished and trigger bar spring replaced.