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Description
Transform Your Smith & Wesson M&P with the M*CARBO Trigger Upgrade Kit - 1.0 & 2.0 Models
Elevate your Smith & Wesson M&P pistol's trigger performance with the M*CARBO Trigger Upgrade Kit. This affordable, high-quality spring package reduces your factory trigger pull weight by about 50%, delivering a smoother, crisper, and lighter break for better accuracy and faster shooting. Ideal for competitive shooters, law enforcement, home defense users, and everyday enthusiasts looking to optimize their 9mm, .40 cal, .357 SIG, or .45 ACP M&P.
- Trigger Pull Reduction: From stock ~6.75 lbs to modified ~3.75 lbs average (results vary +/- 1 lb based on model and polishing)
- Compatibility: Fits S&W M&P 1.0 and 2.0 models in 9mm, .357 SIG, .40 S&W, .45 ACP (not for 10mm)
- Materials: Premium ASTM A228 music wire American spring steel for durability and consistent performance
- Key Components: Lighter striker spring, striker block spring, sear spring, heavy-duty trigger return spring
- Included Tools & Supplies: Trigger installation tool, 1,000 grit sandpaper for polishing, PTFE grease, assembly dowel
- Made in the USA: Crafted by combat veterans with superior quality control
- Guarantee: Protected by M*CARBO's 100% Lifetime Guarantee
- Shipping: Fast same-day shipping from our warehouse for quick nationwide delivery
Installation involves replacing factory springs and optional light polishing of sear and disconnector surfaces for optimal smoothness. Detailed step-by-step video guides are available from M*CARBO. This kit maintains all factory safeties and does not alter the firearm's semi-automatic function. Experience a noticeable improvement in trigger feel, reset, and shot-to-shot consistency that helps tighten groups and boost confidence at the range.
Commonly Asked Questions
Will this kit work on my Smith & Wesson M&P 2.0 in 9mm?
Yes, the kit is fully compatible with both M&P 1.0 and 2.0 models across supported calibers, including 9mm. It provides a significant reduction in pull weight and smoother operation.
How much polishing is required for best results?
Light polishing of the sear and disconnector contact points using the included 1,000 grit sandpaper is recommended. Many users achieve excellent results with 15-30 minutes of careful work, leading to a glass-smooth trigger.
Is this kit safe for carry or defensive use?
Yes, the upgrade preserves factory safety mechanisms and reliability when installed correctly. Thousands of users report improved performance without issues in defensive or competition scenarios.
Does the heavy-duty trigger return spring increase reset force?
The heavy-duty return spring is designed to help reduce overall felt pull weight while providing positive reset. It contributes to the crisp feel without making the trigger overly heavy.