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Review
I was extremely happy with M*carb's CZ 75 Trigger kit which gave me a nice reduced trigger pull. Because of this I decided to install the S&W M&P shield 9 Trigger Spring Kit on my original Shield 1.0 before deciding if I wanted to purchase the newer model. Installation was fairly easily done with the polishing of parts making a big difference also. The spring kit definitely reduced the trigger pull without any of the gritty feeling. Staying on target more easily makes range time more fun. Break is crisp but wish it was more audible. With adding Talon grips and a set of night sights I now have, for less money, what it would have cost me to purchase a newer model with the same mods. Definetly would recoment M*carbo spring kits.
I just did my M&P Shield that I bought in March 2021. I have an H&K and wanted the Shield to have as good of a trigger pull. I followed the video for the installation (recommended). It took me about 6 hours for the entire process. Set up, start and stop video, take a break etc. There is a difference on my Shield from the one in the video as I have a thumb safety and mag safety that are not discussed. If you have that set up pay attention when dismantling the frame. Mine went back together fine after a couple of tries and understanding the mechanics. The frame pins did not tap out easily on my gun. Putting the trigger hinge pin back in was a little more difficult than I thought it would be. The real deal is that the pull improved dramatically. I don't have a trigger weight measurement scale, but I can feel the difference. I highly recommend this kit.
Yeah it’s basically just a bag of springs but it really changes the feel of the trigger, much better than the stock set-up. The included “trigger pin installation tool” made the job much easier when reassembling, and the step-by-step installation video was excellent. Overall a great experience and product, what I’ve come to expect with M-Carbo.
Great product followed videos and reduced the pull great. Quality parts that worked perfectly
Just finished installing in my 9mm Shield. What a difference! (Although I knew it would be much lighter with a crisp break and reset as I already installed trigger kits in my 45 Shield and SCCY CPX-2) Also bought one for my Ruger GSR but haven’t installed it yet!
Great spring set and a noticeable improvement in my 9mm Shield. However, removing the stock rear sight which is necessary to polish the striker safety and replace that spring was a real pain! The tolerances on the sight dove tail were way too tight and I replaced both front and rear sights with Hi Viz.
Recieved two kits in nearly record time, as did my other two kits preciously obtained and installed. No covid excuses from M-Carbo folks. The kits are a very much needed addition to any pistol really. One could pollish all the parts in the video as I did my first Shield and make a measureable difference. But I later opted for the M-Carbo spring kit and "overhauled" it as it should have been from S&W. Please, if you have any skills on disassembly and reassembly of your pistol and the spring kit is available for your model, you will not be disappointed with the results.
This kit was easy to install. The instructional video was extremely helpful, and the trigger is much lighter and smoother than it previously was.
You can dramatically change the feel of your stock M&P trigger with this inexpensive kit and an hour of your time. Takes out the grittiness and lightens the pull without being too light. The installation video is fantastic! Be patient with reassembly if it's your first time taking it that far apart.
Installation of springs went very well. Reassembly of the Sear and Frame mechanisms was more difficult. I would suggest that instead of using the rear roll pin when installing the Sear mechanism, to first use a 1/8" punch to hold the Sear mechanism in place. Install the front roll pin first. Installing the rear roll pin means hammering, and the Frame mechanism can be jostled around, the handy tool dislocated, and you will have to start all over. There is also a pin in the Sear mechanism housing in some models that can slide out without any effort. I quickly replaced mine in place, but it kind of freaked me out!
From the get go, the guys at mcarbo have been phenomenal. First, I had a back order on a part and they said hey we'll ship it when we get it. Shipping extremely fast. Second, all the parts came labeled and clearly marked. Install was a piece of cake with their informative video. They went very in depth into it and from multiple angles so you can see exactly what you are doing. The polishing and cleaning up OEM parts was also great . Overall, the parts perform flawlessly and are major improvement to my shield. Originally was just looking for my keltic but saw this kit and said hey, its $20, best $20 spent on an upgrade for sure
Bought a police trade in M&P 45 that had a trigger that was so bad it wouldn't register on a pull scale. Replaced with the trigger kit and polished the sear and striker assembly. Now it is 5.6 pounds average pull. Great step by step video. GOOD company to do business with.
BLUF: Once I got it in, the kit worked great...just as advertised. Apparently S&W used red Loctite to also glue my rear sight to the frame so I went through two brass punches before being forced to use my Wheeler steel punches. The wooden dowel never had a chance. No material damage and the slight cosmetic nerfs were quickly repaired with frame paint. The installation video was perfect, and although I dont share the same love of polishing, it seems like it really paid off. Weapon shoots great and has improved my Dicken Drill times by about a second. Great, well thought out product.
I was referred to mcarbo from a buddy of mine, he told me how mcarbo stands by thier product and that they were the best around.. He was right! I love my new upgrade spring set for my shield 45! Crisp smooth trigger pull (took about 1lb off ) my gun operates better then it ever has. GREAT PRODUCT!
Night and day for 20buck you can’t beat it best money I’ve spent to date on my 40. I’ve never worked on a gun ever and with the videos it was a walk in the park. Now Mcarbo hurry up with a trigger shoe for the shield 2.0. Please PLEASE Please lol
I bought this for a 1.0 shield. However, I didn't use it. The main reason being, that I installed a two dot sear from apex, and with this kit, my trigger pull became too light for my liking. Indeed if you do some minor polishing, and install this kit, it will definitely lower your pull to under 4 pounds. Customer service so far was excellent. Shipped fast, kept in touch about the shipping. Good stuff! Thanks carbo!