The AR-15 platform's modularity allows for a vast array of modifications, and among the most intriguing is the double trigger system. This modification allows for two independent triggers, each firing a round. This article will explore the functionality, legality, and practical applications of a double trigger AR-15, separating fact from fiction surrounding this niche modification.
Understanding the Mechanics of a Double Trigger AR-15
A double trigger AR-15 utilizes a specialized lower receiver that houses two independent trigger mechanisms. Each trigger is connected to its own hammer and firing pin, meaning simultaneous or sequential firing of two rounds is possible. There are several designs, but they all share the core principle of independent firing mechanisms. Some designs incorporate a selector switch to choose between single and double trigger modes, while others are permanently configured for double trigger operation.
How the Double Trigger System Works
- Independent Firing Pins: Unlike a standard AR-15, a double trigger system incorporates two separate firing pins, each controlled by its respective hammer and trigger.
- Dual Trigger Mechanisms: Each trigger operates independently, similar to two separate single-stage triggers.
- Selective Fire (Sometimes): Some double trigger systems incorporate a selector switch, allowing the user to switch between single trigger (like a standard AR-15) and double trigger modes. This is different from traditional select-fire weapons.
Important Note: A double trigger AR-15 is not a fully automatic weapon. It does not fire continuously as long as the trigger is held. Each pull of a trigger fires only one round. The rapid potential for firing two rounds is the main difference from a standard single-trigger system.
Legality of Double Trigger AR-15s
The legality of a double trigger AR-15 is complex and depends heavily on your location. The modification itself does not automatically make the firearm illegal in all jurisdictions. However, several factors can impact legality:
- National Firearms Act (NFA) Compliance: In the United States, the NFA regulates certain firearm modifications, including those that could be construed as altering the rate of fire. While not inherently fully automatic, the potential for rapid fire could lead to legal complications in some interpretations of the law. Always check your local and state laws before purchasing or modifying a firearm.
- State and Local Laws: State and local laws vary widely regarding firearm modifications. Some states have stricter regulations on semi-automatic weapons than others. Consult your local authorities or a firearms lawyer for definitive legal guidance.
- Manufacturer and Sales: Manufacturers and retailers should be aware of the legal implications in your area before selling or providing such a conversion.
Practical Applications and Considerations
While intriguing, the practicality of a double trigger AR-15 is a subject of debate among firearm enthusiasts.
Potential Advantages:
- Increased Rate of Fire: The primary advantage is the potential for increased rate of fire compared to a standard AR-15. This could be beneficial in certain defensive situations, but skill and training are paramount.
- Unique Tactical Applications: Some believe that it could offer tactical advantages in specific scenarios, requiring more training and practice to effectively utilize.
Disadvantages:
- Increased Complexity: Double trigger systems add complexity to the firearm's mechanism, potentially increasing the risk of malfunctions. Proper maintenance and cleaning are crucial.
- Accuracy Challenges: Precisely coordinating the pulls of two triggers requires significant practice. Accuracy can suffer, especially under stress.
- Cost: Double trigger systems are typically more expensive than standard AR-15 triggers.
- Weight and Size: The addition of extra parts typically adds weight and slightly increases the size of the lower receiver.
Case Study: Real-world Performance and User Feedback
Limited data exists on the widespread use of double trigger AR-15s. Anecdotal evidence suggests that they require substantial training to master and offer limited practical advantages in most shooting scenarios compared to their cost and complexity. Precision shooting is often negatively affected due to the difficulty in precise double-trigger control.
Conclusion: A Niche Modification
The double trigger AR-15 remains a niche modification within the AR-15 community. While intriguing from a technical standpoint, its practicality is questionable for most users. The added complexity, cost, and potential legal issues, coupled with the challenges in maintaining accuracy, mean that it's not a modification for everyone. Always prioritize safety and legality, and consult with relevant experts before making any modifications to your firearm. Remember to always check your local and state laws before purchasing or modifying any firearm.