Understanding Glock Triggers and Performance Upgrades
Basic Glock Trigger Mechanics
The Glock pistol, a name synonymous with reliability and simplicity, holds a revered place in the firearms world. Its polymer frame and striker-fired mechanism have revolutionized the industry, making it a favorite among law enforcement, military personnel, and civilian shooters alike. Beyond its inherent advantages, the Glock’s modular design has fueled a vibrant aftermarket, offering a plethora of customization options. Among these, the Glock performance trigger stands out as a popular upgrade, promising enhanced accuracy, faster follow-up shots, and an overall improved shooting experience.
Overview of Performance Trigger Options
The desire for improved trigger performance is understandable, but the pursuit of a lighter, faster trigger can inadvertently introduce problems. One of the most critical aspects to consider is reliability. Several potential Glock performance trigger issues can lead to malfunctions that jeopardize the firearm’s functionality.
Common Glock Performance Trigger Issues
Reliability Concerns
One of the more serious reliability problems is the potential for a Failure to Fire (FTF). This occurs when the trigger is pulled, but the primer on the cartridge fails to ignite, preventing the gun from firing. Several factors can contribute to FTFs in modified Glocks. A lighter striker spring, often used in conjunction with performance triggers to reduce pull weight, may not provide enough force to reliably ignite all types of primers. In addition, the firing pin safety plunger might not be fully disengaged, slightly impeding the firing pin’s movement. Another factor could be improper installation. If the trigger components are not correctly assembled, this can lead to malfunctions. Finally, mixing and matching aftermarket components without proper compatibility testing can also result in these problems. Always use high-quality components and ensure the components work together properly.
Failure to Extract/Eject (FTE/FTEj)
Another critical reliability concern is Failure to Extract/Eject (FTE/FTEj). These malfunctions involve failures to properly remove the spent casing from the chamber (FTE) or to eject it from the firearm (FTEj). While not always directly related to the trigger itself, trigger components can play an indirect role. For example, excessive pull weight or an improperly tuned trigger can potentially impact the slide’s cycling speed, leading to insufficient extraction or ejection. The recoil spring, which is designed to manage the energy of the fired cartridge, is also an important factor in this process, and must work in harmony with the rest of the parts in your Glock. If the trigger modifications, along with other aftermarket modifications, are out of balance, FTE/FTEj issues can arise.
Failure to Return to Battery (FTRTB)
Failure to Return to Battery (FTRTB) is yet another reliability concern that can manifest with Glock performance trigger issues. This means that the slide does not fully close after firing, preventing the gun from being ready to fire again. This is also not always a direct result of trigger issues. However, sometimes, a performance trigger can affect this function. Some of the same issues that affect FTF and FTE/FTEj can lead to FTRTB. If the trigger has a problem, the slide may not cycle back into battery. This could be because of the trigger pull weight or the quality of the trigger.
Safety Issues
Beyond reliability, safety is another prime concern when modifying a Glock’s trigger. Introducing changes to the trigger system can inadvertently increase the risk of accidental discharges.
Unintentional Discharge
A lighter trigger pull, the very thing many shooters seek, can also increase the likelihood of an unintended discharge. If the trigger pull is too light or the trigger mechanism is not properly installed, the firearm could discharge unexpectedly from slight bumps, jarring, or even unintentional contact with the trigger. This is a particularly critical consideration for those who carry their Glocks for self-defense. The added sensitivity of a lighter trigger can drastically alter the handling characteristics, and can potentially lead to dangerous situations.
Firing Pin Safety
Another safety consideration is the firing pin safety. This mechanism is designed to prevent the firing pin from moving forward unless the trigger is fully depressed. A poorly installed trigger, or components that are not compatible, can interfere with the proper function of this safety. If the firing pin safety is compromised, the pistol is at risk of accidental firing.
Mechanical Issues
Mechanical problems also frequently arise with Glock performance trigger issues. These are often related to the quality of the components and/or the precision of the installation.
Trigger Creep/Grittiness
Trigger creep, also known as trigger grittiness, is a common issue. It refers to a feeling of resistance or friction in the trigger pull before the sear releases the firing pin. This can result from numerous factors, including the use of poorly manufactured or mismatched components. Aftermarket parts with inadequate tolerances can bind against each other, creating friction. Improper lubrication can also contribute to creep. Addressing creep typically involves careful disassembly, inspection for wear or burrs, proper lubrication, and possibly the replacement of problematic components.
Over-Travel or Under-Travel
Over-travel and under-travel issues can occur. Over-travel refers to the trigger moving further back than necessary after the sear releases the firing pin, while under-travel means the trigger doesn’t fully engage the firing mechanism. Both issues can negatively impact trigger control and accuracy. Performance triggers often include adjustable over-travel stops. However, if not correctly adjusted, they can either impede the trigger’s full function or lead to malfunctions. The trigger’s mechanical design is very important here.
Reset Problems
Problems with the trigger reset can also be encountered. The reset is the point at which the trigger returns forward after firing, enabling the shooter to fire again. A short, crisp reset is a hallmark of a good performance trigger, but it can also be a source of problems. If the trigger components are not correctly aligned, or if there is excessive friction, the reset might be sluggish or incomplete. The shooter might experience “dead triggers”, meaning they cannot feel the trigger reset. This can hinder the ability to maintain rapid, accurate follow-up shots. The connector in the trigger assembly is a key part of the reset function.
Installation and Compatibility Challenges
Installation and compatibility challenges represent another set of factors that can introduce Glock performance trigger issues. The ease of installation is often touted as a benefit of Glock aftermarket parts. However, improper installation remains a primary cause of trigger problems.
Improper Installation
Even with excellent components, incorrect installation can quickly lead to malfunctions. Many owners are comfortable with the relatively simple disassembly and reassembly of a Glock. However, even experienced shooters may overlook important steps or details. Following the manufacturer’s instructions to the letter is crucial. Failing to do so can result in parts not seating correctly, springs being installed backward, or components being damaged during assembly. It’s easy to misinterpret installation instructions.
Compatibility Problems
Compatibility is often the source of many headaches. Many aftermarket components are designed to work with the original factory parts. However, when various components are purchased from different manufacturers, issues can arise. For example, a trigger spring from one company might not function optimally with a connector from another company. This is due to varying design specifications. Before making a purchase, it’s vital to research compatibility. Consider purchasing complete trigger kits from reputable manufacturers to ensure a more harmonious fit.
Fitment Issues
Fitment issues can also arise. Glock pistols are produced in different generations (Gen 1-5). The components are not always interchangeable between the different generations. Ensure that the chosen aftermarket trigger parts are specifically designed for the user’s Glock generation. Failing to do so can lead to binding, improper function, or even the inability to install the parts at all.
Diagnosing and Troubleshooting Performance Trigger Problems
Initial Assessment
If a Glock performance trigger issue arises, identifying the source of the problem and taking the necessary steps to resolve the issue is vital. A systematic approach can help troubleshoot these issues.
Visual Inspection
A thorough initial assessment is the first step. Begin by carefully inspecting the trigger assembly. Look for any visible damage, such as broken springs, bent parts, or unusual wear. Then, conduct a functional test. Slowly manipulate the trigger, observing its movement and feel. Dry-fire the pistol (always ensuring the firearm is pointed in a safe direction) to assess the trigger pull, reset, and overall functionality. These initial steps provide valuable clues.
Troubleshooting Steps
If a malfunction is discovered, it’s important to isolate the problem. This may involve removing each trigger component, one at a time, and then testing to see when the issue is resolved. Check each spring, connector, and trigger shoe. Check to ensure the trigger pin is installed correctly.
Part Compatibility Check
Check the parts for compatibility. Ensure that all the components are designed to work together. Read manufacturer’s recommendations.
Re-installation
Re-installation is often the solution. Ensure that the trigger is installed according to manufacturer’s directions. Reinstall all parts and make sure everything fits snugly.
Correcting/Adjusting/Tuning
Correcting and adjusting the trigger, as appropriate, is often part of the troubleshooting procedure. This might involve adjusting the over-travel stop, lubricating the components, or polishing friction points.
Preventative Measures and Best Practices
Choosing the Right Trigger Components
Preventing Glock performance trigger issues requires a proactive approach, encompassing careful selection, meticulous installation, and responsible maintenance.
Component Selection
Choosing the correct trigger components is the foundation of a successful upgrade. This begins with careful research. Compare various trigger kits or individual components, considering the manufacturer’s reputation and customer reviews. Before purchasing, determine the intended use of the firearm. Self-defense, competitive shooting, and recreational target shooting have different performance needs. Performance trigger recommendations vary for each application. Seek guidance from knowledgeable sources. Talking to experienced Glock owners, visiting gun forums, or consulting with a gunsmith can help inform the decision.
Proper Installation
Proper installation is paramount. Always follow the manufacturer’s installation instructions. Use the correct tools and take your time. Pay careful attention to detail and ensure that all components are correctly seated and aligned. After installation, function test the trigger thoroughly.
Maintenance and Inspection
Regular maintenance and inspection are essential for continued reliable performance. Clean the trigger assembly and lubricate the components with appropriate gun oil. Inspect the trigger parts periodically for wear, damage, or any signs of malfunction.
Testing and Practice
Testing the modified trigger is absolutely essential. After installation, test-fire the pistol to ensure the new trigger functions correctly, and test for reliability. Practice with the modified trigger. Get used to the feel, reset, and the new pull weight. This will help you become proficient with the modified trigger.
Legal and Safety Considerations
Local Gun Laws
Responsible gun ownership means being well-versed on legal and safety considerations. Local and state gun laws should be known. Ensure that any modifications comply with the applicable laws. Always handle firearms safely and follow the rules of gun safety. The use of a performance trigger does not negate the responsibility to handle the firearm in a safe manner. The shooter is always responsible for the safe operation of the firearm.
Conclusion
In conclusion, while the promise of a Glock performance trigger is appealing, it is important to weigh the potential benefits against the risks. By understanding the common issues, practicing responsible installation, and applying diligent maintenance, you can maximize the benefits of a performance trigger while minimizing the potential problems. If in doubt, or if encountering persistent issues, seek professional assistance from a qualified gunsmith. Safe and enjoyable shooting requires not only a great pistol but also a responsible, educated approach.
