Understanding the M&P Trigger
Anatomy of the M&P Trigger System
The M&P trigger system, while seemingly simple, is a carefully engineered mechanism. Understanding its core components is fundamental to grasping how upgrades can improve performance. The trigger itself is the obvious starting point. When pulled, it interacts with the trigger bar, a crucial component that interfaces with the sear. The sear, a small but vital piece, holds the striker (the firing pin) under spring tension. As the trigger is pulled, the trigger bar depresses the sear, releasing the striker to ignite the primer and fire the cartridge. Springs, both in the trigger and throughout the system, play a crucial role in return and reset.
Factors Affecting Trigger Performance
The trigger’s feel is influenced by several factors. The **trigger pull weight**, the amount of force needed to pull the trigger and release the striker, is a primary concern for many shooters. **Travel distance**, the distance the trigger moves from its resting position to the point of firing, can affect accuracy. The **reset distance**, the distance the trigger must travel forward after firing to reset the sear for the next shot, also plays a role. A short and positive reset allows for faster follow-up shots. Grittiness, friction within the trigger mechanism, can detract from a clean break.
Common Issues with Factory Triggers
Common issues with the factory triggers of the M&P pistol are often cited. The heavy pull weight can make it difficult to shoot accurately, especially for those with smaller hands or less experience. The gritty feel can lead to inconsistent trigger pulls, and excessive travel can contribute to muzzle movement, reducing precision. The long reset distance can slow down follow-up shots and make it harder to maintain a rhythm. These issues are not universal, but they are prevalent enough to drive many M&P owners to consider upgrades.
Types of M&P Trigger Upgrades
Trigger Kits
Trigger Kits offer the most comprehensive approach, replacing multiple trigger components at once. Full trigger kits typically include the trigger, trigger bar, sear, springs, and sometimes a striker spring. These kits aim to address the issues of heavy pull weight, gritty feel, and long travel by optimizing the entire trigger system. Brands such as Apex Tactical and Johnny Glocks are well-regarded for providing complete trigger kits that significantly enhance the feel and performance of an M&P. These kits often boast lighter pull weights, smoother trigger pulls, and crisper breaks. However, these kits often require more involved installation than simple parts replacements.
Sear and Spring Kits
Sear and Spring Kits specifically target the sear and spring components. The sear plays a crucial role in the trigger break, and an upgraded sear can provide a crisper, cleaner release. Upgrading the springs can also refine the trigger pull weight. This upgrade type is a great way to improve the feel of the trigger without committing to a complete kit. This approach is often a more budget-friendly option for shooters on a budget.
Trigger Shoes (Triggers Only)
Trigger Shoes, or Trigger Only replacements, offer ergonomic and aesthetic improvements. Aftermarket trigger shoes come in various shapes and styles, including flat-faced and curved designs. These replacement triggers often offer a different feel than the original, possibly allowing for a straighter pull or better finger placement. The choice between flat and curved triggers is often a matter of personal preference and what feels best for your hand.
Connectors (Trigger Bars)
Connectors, also known as trigger bars, are the component connecting the trigger to the sear. Upgrading the connector can significantly improve the smoothness of the trigger pull. Aftermarket connectors often have smoother surfaces and more refined geometry, leading to reduced friction and a cleaner, crisper trigger feel.
Spring Kits
Spring Kits are a common and relatively inexpensive upgrade. Replacing the springs, particularly the trigger return spring and striker spring, allows for manipulation of trigger pull weight and reset. By using lighter-weight springs, you can decrease the force required to pull the trigger and potentially speed up the reset. However, excessive use of lighter springs can potentially compromise the reliability of the system and increase the chance of light primer strikes.
Aftermarket Striker Assemblies
Aftermarket Striker Assemblies, are less common, but some vendors offer striker assemblies. These can sometimes reduce the overall trigger pull weight by reducing the weight of the striker. This type of upgrade can potentially impact the overall trigger feel.
Brands and Products
Apex Tactical
Apex Tactical is perhaps the most well-known and widely respected name in M&P trigger upgrades. Apex offers a wide range of kits and components, including their popular Flat-Faced Trigger kits, known for their crisp break and reduced trigger pull weight. Their products are renowned for their quality, reliability, and ease of installation. The Apex Tactical triggers are very popular among both recreational and competitive shooters.
Johnny Glocks
Johnny Glocks is another highly-regarded brand, particularly known for its comprehensive approach to trigger upgrades. Johnny Glocks offers custom-tuned trigger kits that include a variety of components optimized for enhanced performance. Their offerings are well-respected, providing shooters with a significant upgrade in feel and performance.
Overwatch Precision
Overwatch Precision is another brand known for its high-quality trigger components. Their aftermarket triggers are precision-machined and designed to provide a significant improvement in trigger feel, including a crisp break and reduced pre-travel.
Timney Triggers
Timney Triggers, while primarily known for their drop-in trigger systems for other platforms, also offers options for the M&P. Their triggers are known for their precise engineering and excellent trigger pull qualities. They may offer a streamlined upgrade process.
Each brand brings unique benefits to the table. Apex often appeals to those seeking a balance of performance and ease of installation. Johnny Glocks caters to those looking for custom-tuned options. Overwatch Precision prioritizes precise machining and build quality. These are just a few of the vendors offering fantastic aftermarket triggers for the M&P.
Installation and Considerations
Safety First
Proper installation is crucial for ensuring the safety and proper function of any M&P trigger upgrade. If you’re not comfortable working on firearms, it’s recommended that you seek the services of a qualified gunsmith.
Safety should always be your paramount concern. Before disassembling your M&P, ensure the firearm is unloaded and the magazine is removed. Verify the chamber is empty. Always follow the manufacturer’s instructions, and be aware of the potential hazards associated with working on firearms.
Tools and Equipment
You’ll need specific tools for the installation, including a punch set, a small hammer, an armorer’s block (if available), and possibly a vise. Gunsmithing tools may be necessary to aid in the process. Good lighting and a clean work surface are essential.
Installation Steps
Installation steps vary depending on the specific upgrade kit or component. However, the general process involves disassembling the slide and frame, removing the existing trigger components, and installing the aftermarket parts. This may require you to punch out pins, and carefully remove springs. Be sure to follow the manufacturer’s installation instructions.
Important Considerations
Important considerations include:
Compatibility: Ensure the upgrade is compatible with your specific M&P model and generation. Newer models may have different trigger designs.
Reliability: After installation, conduct thorough function testing to ensure all safety features work correctly and the pistol fires reliably. Test the pistol using various ammunition types.
Legal Compliance: Be aware of any local regulations regarding trigger pull weight. Some jurisdictions have minimum trigger pull weight requirements for concealed carry or other purposes.
Benefits of Upgrading Your M&P Trigger
Improved Accuracy
Improved accuracy is a key benefit. A smoother, lighter trigger pull reduces the likelihood of pulling the muzzle off-target during the shot. This allows for more consistent groupings and greater precision.
Enhanced Control
Enhanced control is a related benefit. With a better trigger, you’ll have more control over the firearm. You can manage recoil more effectively and maintain a steady sight picture, making it easier to acquire and engage targets.
Increased Shooting Enjoyment
Increased shooting enjoyment is a subjective but significant benefit. A refined trigger makes the shooting experience more enjoyable. The crisp break, the clean reset, and the reduced pull weight combine to create a more rewarding and satisfying shooting session.
Competitive Advantage
Competitive advantage is a benefit particularly important for competitive shooters. A well-tuned trigger gives you a competitive edge by allowing for faster and more accurate follow-up shots.
Things to Consider Before Upgrading
Cost
Cost is a significant factor. Trigger upgrades range in price. The cost of the trigger kit, or replacement parts will influence your decision. Carefully balance your budget with the desired performance improvements.
Skill Level
Skill level is another crucial element. Assess your comfort level and experience with firearms. Some upgrades are more involved than others. If you’re not confident in your ability to perform the installation, consider professional gunsmithing.
Warranty
Warranty implications should be considered. Installing aftermarket parts may void the manufacturer’s warranty on the pistol. If you are concerned about this, research the potential impact before proceeding.
Intended Use
Intended use of your firearm should influence your decisions. A trigger setup for concealed carry may differ from one optimized for competition. Consider your priorities when making your choice.
Conclusion
Upgrading your M&P trigger is a rewarding undertaking that can significantly enhance your shooting experience. A better trigger can improve accuracy, enhance control, and increase shooting enjoyment. By understanding the M&P trigger system, exploring the different types of upgrades available, and carefully considering your needs and priorities, you can unlock the full potential of your M&P pistol.
Take the first step toward a better shooting experience by exploring the M&P trigger upgrade options available to you. Research the different options, consult with experienced shooters, and choose the best upgrade for your needs.
Remember, the right trigger is the gateway to consistent accuracy and shooting satisfaction.
