The Polymer80 (P80) pistol platform, while popular for its affordability and customization options, can sometimes present challenges. One common issue is a trigger that fails to reset properly. This means the trigger doesn't return to its original firing position after the shot, preventing subsequent shots. This article will delve into the causes of a P80 trigger not resetting, providing troubleshooting steps and solutions to get your firearm functioning correctly. Remember, always handle firearms safely and responsibly. Disassemble and work on firearms only if you have the proper knowledge and experience.
Understanding the P80 Trigger Mechanism
Before troubleshooting, it's crucial to understand the basic mechanics of the P80 trigger system. The trigger interacts with several components:
- Trigger Bar: This part connects the trigger to the sear. Its movement releases the sear, allowing the hammer or striker to fall.
- Sear: This is a critical safety mechanism that prevents accidental discharge. It engages with the hammer/striker, holding it in place until the trigger is pulled.
- Disconnector: This part ensures the trigger can't be pulled again until the slide cycles, allowing for safe, semi-automatic operation.
- Hammer/Striker: This component delivers the blow that ignites the primer of the cartridge.
A malfunction in any of these components can lead to a trigger that doesn't reset.
Common Causes of a P80 Trigger Not Resetting
Several factors can contribute to a P80 trigger failing to reset:
1. Improper Trigger Installation:
- Incorrect Trigger Bar Engagement: If the trigger bar isn't properly seated or engaged with the sear and disconnector, it will prevent proper resetting. This is a frequent cause of malfunction and often the easiest to fix with careful reassembly.
- Bent or Damaged Trigger Bar: During installation or use, the trigger bar might be bent, hindering its movement. A slightly bent trigger bar might only cause intermittent failure.
- Loose Trigger Pin: The trigger pin secures the trigger in place. If it's loose or improperly installed, the trigger might not function correctly.
2. Issues with the Disconnector:
- Broken or Damaged Disconnector: A broken or damaged disconnector will prevent the trigger from resetting correctly. Inspect this carefully for cracks or wear.
- Improper Disconnector Installation: Incorrect installation can lead to the disconnector not engaging the trigger or hammer properly.
3. Problems with the Sear:
- Broken or Damaged Sear: A broken or damaged sear will compromise its ability to hold the hammer/striker and subsequently reset the trigger. Look for cracks or deformities.
- Sear Engagement Issues: Improper engagement between the sear and hammer/striker can also be an issue, preventing the trigger from resetting.
4. Other Potential Problems
- Trigger Spring Issues: A weak or broken trigger spring will affect the trigger’s return to its original position.
- Debris or Dirt: Dust, dirt, or debris in the trigger mechanism can interfere with its operation. Cleaning and lubrication are essential.
- Polymer80 Frame Issues (Rare): Though uncommon, defects in the frame's construction could potentially interfere with the trigger's function. This should only be suspected after ruling out the above issues.
Troubleshooting and Solutions
1. Thorough Inspection and Cleaning:
- Disassemble the trigger group completely. Follow the manufacturer’s instructions or consult reputable online resources with detailed disassembly guides.
- Carefully inspect each component for damage, wear, or bends.
- Clean all parts meticulously with a suitable gun cleaning solvent and brush. Remove any debris or dirt.
- Apply a light amount of gun lubricant to the moving parts.
2. Verify Trigger Bar Installation:
- Ensure the trigger bar is properly installed and fully engages with the sear and disconnector. Refer to a detailed diagram or video to confirm proper engagement. This is often the source of the problem.
- Check for any bends or damage to the trigger bar. If it's bent, consider replacement.
3. Examine the Disconnector and Sear:
- Carefully inspect the disconnector and sear for any damage or breakage. Replace any damaged parts.
- Verify correct installation; consult diagrams and guides to ensure proper seating and engagement.
4. Check the Trigger Spring:
- Inspect the trigger spring for wear or breakage. Replace if necessary.
5. Address Debris or Dirt:
- If debris is found, carefully remove it with a brush or compressed air. Avoid damaging any delicate parts.
6. Reassemble the Trigger Group:
- Once you’ve inspected and cleaned all parts, carefully reassemble the trigger group following the manufacturer’s instructions. Pay close attention to the order and proper seating of each component.
7. Test Fire (Safely!):
- After reassembly, test fire the firearm at a safe shooting range, following all safety regulations. Always ensure the firearm is unloaded before handling.
Case Study: A P80 Trigger Reset Issue Resolved
One user reported a P80 trigger failing to reset after modifications. Upon disassembly, it was discovered that a small piece of debris was lodged between the trigger bar and the sear. Cleaning and removing the debris resolved the issue. This highlights the importance of cleaning and thorough inspection.
Professional Help
If after troubleshooting the trigger still fails to reset, it is best to seek assistance from a qualified gunsmith. They have the experience and tools to diagnose and repair more complex problems.
Disclaimer: This information is for educational purposes only. Always follow safe gun handling practices. Modifying or repairing firearms requires knowledge and expertise. Incorrect repairs can lead to dangerous malfunctions. If you are not comfortable performing these tasks, consult a qualified gunsmith.