M*Carbo trigger spring kit - Kimber Forum

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Old 05-31-2019, 04:01 AM   #1
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M*Carbo trigger spring kit

Anyone has experience with M*carbo spring trigger kit?

Bought my second micro 9 and this time I got the KHX version.

Would like to start upgrading this one a bit more.

I know that it supposed to make the trigger pull lighter. But what are the pros and cons having a lighter firing pin springs and hammer spring ? does it affect the amount of force being used to strike the primer?

Thanks,
Russ
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Old 05-31-2019, 09:40 AM   #2
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Russ, welcome to the site from Tennessee. I don't own a Micro so I won't comment.
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Old 05-31-2019, 04:34 PM   #3
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Welcome to the forum skeee1, how about stopping by our "New Member Introduction" sub forum and introducing yourself to the membership.
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Old 05-31-2019, 07:06 PM   #4
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I would recommend that you not change a thing at this time. When I got my second micro 9 the trigger pull was off the scale and was bottoming the gauge clear to the stop. Everyone told me to put at least 500 rounds through it before sending it home. I was skeptical but I thought I would do it. I did and now the trigger pull is eight pounds pull. Be patient, it will pay off.
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Old 05-31-2019, 08:26 PM   #5
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I've got about 550 rnds through my Micro 9 and the trigger pull is 4.5lbs measured at the bottom of the shoe, 5.5lbs measured at the center of the curve of the shoe.
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Old 06-01-2019, 03:34 AM   #6
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thanks everyone on the feedback
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Old 06-01-2019, 07:30 AM   #7
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Originally Posted by skeee1 View Post
I know that it supposed to make the trigger pull lighter. But what are the pros and cons having a lighter firing pin springs and hammer spring ? does it affect the amount of force being used to strike the primer?

The trigger spring will make the pull lighter at the expense of the trigger return/reset. The hammer spring will have an effect, at the expense of primer strikes. Not sure what you'd hope to achieve with the firing pin spring.

Your best bet is probably to run 500 rounds though the gun, and then decide what modifications you want to make.

When the gun is new, everything is unknown. After you've broken it in thoroughly, the parts, especially the sear/hammer, are worn in and you will have an idea how the gun runs. The first step is getting the gun running reliably. Then figure out what improvements you want to make. It's often best to make one change at a time. Control each variable so you know what effect it has.

If you're an expert and already know what effect each variable will have on the operation of the gun, then by all means go wild.
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Old 06-17-2019, 05:45 AM   #8
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I put the M*Carbo spring set in my nightfall model after about 500 rounds. The trigger pull is noticeably better, no real difference in trigger reset, and the pistol has been totally reliable for 300 rounds. It’s do it yourself work. Took about 10 minutes. M*Carbo also has a how to video on their website.
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Old 08-18-2019, 12:18 PM   #9
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Originally Posted by royal barnes View Post
I put the M*Carbo spring set in my nightfall model after about 500 rounds. The trigger pull is noticeably better, no real difference in trigger reset, and the pistol has been totally reliable for 300 rounds. Itís do it yourself work. Took about 10 minutes. M*Carbo also has a how to video on their website.
X2 on the Mcarbo spring kit. Worth every penny.
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Old 08-18-2019, 12:35 PM   #10
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"Not sure what you'd hope to achieve with the firing pin spring".

It is intended to compensate for the lighter hammer spring.
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