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Labeled Smith and Wesson M&P Trigger Spring Kit M*CARBO

Smith and Wesson M&P Trigger Upgrade Kit 1.0 & 2.0 - 9mm | .357 | .40 cal | .45 ACP (2222733344444)

4.75 stars, based on 142 reviews
Smith and Wesson M&P Trigger Upgrade Kit 1.0 & 2.0 Reduce your Smith and Wesson M&P Trigger Pull from a stock 6.75lbs to a modified 3.75lbs!  50% Trigger Pull Reduction! Best Custom Smith and Wesson M&P Trigger Upgrade for a lighter and...

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The kit was affordable and with patience worked very well. I don't have a trigger scale but the difference was noticeable. Send the weapon in to mcarbo if you don't have patience.

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Being a Veteran and an enthusiast of various weaponry, I was excited to learn Mcarbo had parts to fit my pistol. Along with extremely fast shipping, quality parts, and helpful conversation I was able to reduce the trigger pull to the weight I wanted to. Since the updated work the pistol shoots smooth and right on target. Thanks guys.

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easy to follow video steps product works great on time deliverey would highly recommend m carbos business thanks guys

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i very happy with this spring kit. i brought one about a month ago for my M&P 40 shield and installed it. It worked so well that i got one for my M&P 9 shield. i love this kit and i love the MCARBO brothers. I have brought things for them before and i will be buying them again.

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I am very pleased with the service so far, the delivery was very quick and prices are very reasonable. Wasn't able to install the kit, I've lost it somehow. Gonna have to order it again.

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Shipping was fast

Trigger kit took some time and the right tools

We followed video by mcarbo on youtube and the result is very smooth and more stable shooting.

Thank you for this great kit!

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I purchased a new M&P 9mm that was Ma. compliant. It was the only one I could find in my area. The stock trigger was probably the worst I have ever had. This kit from Mcarbo was fairly easy to install.

After polishing and spring installation the trigger was better, but not good. I don't own a trigger pull gage so I can't say for sure what the pull weight was. I do own another M&P 9mm with the stock trigger pull and the new one was still quite a bit more difficult after this kit was installed.



While inspecting the differences between the two trigger sets, I noticed the sears were different. I found that the sear in the older pistol was actually S&W's competition sear. I purchased a competition sear online for $8 plus shipping. After installing the new sear the triggers feel almost identical.

I am assuming they are both around 6# now.



Overall, I am happy with the kit from Mcarbo. Just note that you may need to go a little further if you got stuck with one of the Ma. compliant triggers.

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Rocky Greer

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Bought this spring kit for a MA compliant M&P compact 2.0. MA requires 10+ lb trigger pull for dealer sales. I don’t have a trigger weight scale, so I rigged up a method to use another small scale by pushing down with a U-bolt through the trigger guard. The scale only goes up to 7 pounds, and before installing the spring kit, I pegged the scale with the factory springs still in the gun. I carefully polished all contact services and after installing the new spring kit, I measured the trigger weight at 6 pounds using my method, a noticeable improvement. The spring kit was very easy to install. If you are familiar with the M&P line, it can be done in an hour, not including the polishing. Ready to go try it out at the range.

The company was excellent to deal with and I received my kit in about four days. Got free shipping too. These are the kind of folks I like to deal with.

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Trigger pull feels great! A vast improvement. The kit was very easy to install.

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Everything about this order exceeded my expectations, easy ordering process, fast shipping and the online installation video was spot on to help a total novice do his first gunsmith job. Reduce my trigger pull to approximately 3.5lbs as advertised! Shot my IDPA match after a few practice rounds at the range and the gun performed wonderfully! Thank you……..
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Fantastic reasonable price

Would 100% order it again

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I recently bought a trigger gauge and it turns out that my lightest pistol trigger is the SA of a GP100 that I have at about 2.5lbs. The second lightest trigger in a pistol is my S&W M&P 2 40 after following the MCARBO guide. It went from 6.5lbs to just over 3lbs. It is SUCH a big difference. The M&P is a great gun to begin with but at 3lb trigger pull, just WOW. It's my new favorite.

405xshot

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Third Spring kit purchased. One for Glock and two for M&P . The Glock kit worked really well , after polishing , changing springs and connector. G17 now gas a 4 pound excellent break. M&P 2.0 4pound or so E, 👍 improvement. M&P Core improvement was fair . Overall rating was 4+. Service was 4++.

6lb pull to 3.5

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My second kit installed on an m&p 2.0 with excellent results.

A Little Disappointed....

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I didn't see as much reduction in measured trigger pull as I'd hoped - went from 7.0lbs to 5.5lbs, which is good but not great. With all of the sanding & polishing involved, my trigger FEEL has improved hugely. Very clean & crisp. I wish y'all would come out with a replacement trigger with adjustments to minimize takeup and over travel. I loved the video and followed it step by step as I worked on my gun. I did notice a few minor differences between the video and my 2.0, but nothing that caused any trouble. I rated this kit at 4 stars because of your video. Your explanations are concise but complete, showing every view of every part. I know if I get into trouble I can always rewind it as many times as it takes for me to catch what I missed earlier. As long as I see an installation video for a part, I'm not afraid to buy anything that you sell!