The AR-15 platform's modularity is a key feature, and few upgrades offer as significant an impact as a new trigger kit. Upgrading your AR-15 trigger can dramatically improve accuracy, reduce pull weight, and enhance overall shooting experience. This guide delves into the world of AR-15 trigger kits, covering everything from choosing the right kit to installation and maintenance.
Understanding AR-15 Trigger Mechanisms
Before diving into specific kits, it's crucial to understand the components of an AR-15 trigger group. A standard trigger group includes:
- Hammer: Strikes the firing pin, igniting the cartridge.
- Disconnector: Prevents the firearm from firing fully automatically.
- Trigger: The component the shooter manipulates to initiate the firing sequence.
- Trigger Pin(s): Securely hold the trigger and hammer in place.
- Hammer Pin: Secures the hammer to the lower receiver.
- Safety Selector: Blocks the trigger mechanism when engaged.
Different trigger kits manipulate these components in various ways to achieve different shooting characteristics.
Types of AR-15 Trigger Kits
The market offers a vast array of AR-15 trigger kits catering to various needs and budgets. Here are some popular types:
1. Drop-in Trigger Kits:
These are the most common type and are designed for easy installation without requiring significant gunsmithing skills. Simply remove the old trigger group and replace it with the new one. Many options are available, from budget-friendly replacements to high-end competition triggers.
Examples: Many brands, such as ALG Defense, Geissele Automatics, and CMC Triggers, produce reliable and popular drop-in trigger kits.
2. Two-Stage Triggers:
These triggers offer a distinct two-stage pull. The first stage involves a lighter pull to take up slack, followed by a heavier pull to release the hammer. This design promotes accuracy and controlled shots.
Advantages: Improved accuracy, smoother trigger pull.
Disadvantages: Slightly slower trigger response than single-stage triggers.
3. Single-Stage Triggers:
These triggers provide a consistent, clean break, ideal for rapid firing. The pull weight is consistent throughout the trigger pull.
Advantages: Faster trigger response, ideal for rapid fire.
Disadvantages: May compromise accuracy for some shooters compared to a two-stage trigger.
4. Binary Triggers (Legal Considerations):
These are NOT drop-in triggers and require significant modifications. Binary triggers allow for a shot with every pull and release of the trigger. Important Legal Note: The legality of binary triggers varies significantly depending on location. Check your local and state laws before purchasing or installing one, as they may be restricted or prohibited in certain areas. Their use often requires modification to standard trigger components.
Choosing the Right AR-15 Trigger Kit
Selecting the right kit depends on your shooting style, budget, and intended use. Consider these factors:
- Pull Weight: Measured in pounds, this refers to the force needed to pull the trigger. Lighter triggers are generally preferred for accuracy but require more precise trigger control.
- Trigger Feel: This subjective aspect refers to the smoothness and consistency of the trigger pull.
- Intended Use: A competition shooter will have different needs than a casual shooter.
- Budget: Prices range from under $100 to well over $300, depending on the brand and features.
Installing an AR-15 Trigger Kit: A Step-by-Step Guide
Installing a drop-in trigger kit is generally straightforward, but safety precautions are paramount. Always follow the manufacturer's instructions and be sure to have the necessary tools. (Always ensure your firearm is unloaded before handling and working on it)
Tools Required:
- Gunsmithing punch set
- AR-15 lower receiver block
- Hammer
- Torque wrench
Steps (General):
- Safety First: Unload the firearm and visually inspect the chamber.
- Remove the old trigger group: Using the appropriate tools, carefully remove the trigger pins and the old trigger assembly.
- Install the new trigger group: Carefully insert the new trigger group, aligning all components.
- Insert the trigger pins: Use the punch set to carefully install the trigger pins.
- Test the trigger: After installing the trigger kit, thoroughly check trigger function to ensure smooth and safe operation.
Important Note: While drop-in kits are generally user-installable, some advanced kits might require more expertise. If you're uncomfortable with the process, consider professional installation by a qualified gunsmith.
Maintenance and Cleaning
Regular cleaning and lubrication of your AR-15 trigger kit are essential for maintaining its performance and preventing malfunctions. Use a high-quality gun oil and follow the manufacturer's recommended cleaning instructions.
Conclusion
Upgrading your AR-15 with a new trigger kit offers a substantial improvement in shooting performance. By understanding the various types, installation processes, and maintenance requirements, you can select and install the best trigger kit to meet your specific needs and enhance your shooting experience. Remember to always prioritize safety and follow all manufacturer instructions.