An AR-15 trigger that fails to reset is a serious malfunction, rendering your firearm unsafe and unreliable. This issue can stem from various causes, ranging from simple user error to more complex mechanical problems. This guide will walk you through troubleshooting this problem, identifying potential causes, and providing solutions to get your AR-15 back up and running safely.
Identifying the Problem: Is it Truly a Reset Issue?
Before diving into solutions, it's crucial to accurately diagnose the problem. A trigger that seems to not reset might be exhibiting other malfunctions. Ensure you're actually dealing with a reset issue, and not:
- Double Feeds: Are two rounds feeding into the chamber at once? This can mimic a trigger reset problem but requires a different solution (check your magazine and feeding ramp).
- Bolt Issues: A malfunctioning bolt can prevent the trigger from resetting. Listen for unusual sounds and carefully inspect the bolt's movement.
- Disconnector Problems: This component is vital for preventing double firing. A broken or improperly functioning disconnector is a critical safety concern and requires immediate professional attention.
If you've ruled out these other problems and the trigger consistently fails to reset after firing, proceed to the next steps.
Common Causes of AR-15 Trigger Reset Failure
Several factors can contribute to an AR-15 trigger not resetting:
1. Trigger Pin Issues:
- Loose Trigger Pin: A loose trigger pin can prevent the trigger from moving freely, hindering its reset. Carefully inspect the trigger pin for looseness and secure it if necessary. Use the correct sized punch and hammer for this task to avoid damage.
- Bent or Damaged Trigger Pin: A bent or damaged trigger pin needs to be replaced immediately. This is a safety hazard and should only be done by someone experienced in AR-15 maintenance.
2. Trigger Component Problems:
- Dirty or Damaged Trigger Components: Accumulated debris, dirt, or damage to the trigger, hammer, or disconnector can interfere with the reset mechanism. Thorough cleaning and inspection are essential. If components are damaged, they will need replacement.
- Improper Trigger Installation: An incorrectly installed trigger group can lead to various malfunctions, including reset issues. Ensure the trigger group is correctly installed according to the manufacturer's instructions.
- Faulty Trigger: A malfunctioning or poorly manufactured trigger itself might be the culprit. If other components seem fine, the trigger might need replacing.
3. Hammer Issues:
- Hammer Spring Issues: A weak or broken hammer spring can prevent the hammer from fully cocking, thus impacting trigger reset. Inspect and replace the hammer spring if needed.
- Hammer Interference: Sometimes, the hammer might be slightly interfering with the trigger mechanism. Careful inspection can reveal this.
Troubleshooting and Solutions: A Step-by-Step Guide
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Safety First: Always ensure your firearm is unloaded and cleared before performing any maintenance. Double and triple check.
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Thorough Cleaning: Disassemble the lower receiver and thoroughly clean all trigger group components. Use a suitable gun cleaning solvent and brush. Pay close attention to the trigger, hammer, disconnector, and hammer spring.
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Inspection: Carefully inspect all components for wear, damage, or debris. Look for bent or broken parts. Replace any damaged components.
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Proper Reassembly: Reassemble the trigger group meticulously, following the correct steps and ensuring all parts are correctly seated. Refer to a detailed disassembly/reassembly guide specific to your AR-15 model.
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Functional Test (Unloaded): After reassembly, dry-fire the weapon several times to test the trigger's functionality. Ensure the trigger resets smoothly and consistently each time. Never point a firearm at anything you do not intend to destroy.
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Professional Help: If you are not comfortable performing these steps yourself or if the problem persists after troubleshooting, consult a qualified gunsmith. This is especially critical if you suspect a problem with the disconnector.
Preventing Future Issues
Regular cleaning and lubrication of the trigger group are vital to preventing malfunctions. Store your firearm in a clean, dry environment to minimize the risk of corrosion and damage. Always use high-quality parts and follow proper maintenance procedures.
Disclaimer: This guide is for informational purposes only and should not be considered professional advice. Always prioritize safety and consult a qualified gunsmith if you are unsure about any maintenance procedures. Improper handling of firearms can lead to serious injury or death.
