The seemingly insignificant AR-15 hammer spring might be small, but its correct orientation is crucial for the reliable function of your firearm. Getting it wrong can lead to malfunctions, potentially compromising safety and accuracy. This guide will clarify the proper installation and orientation of your AR-15 hammer spring, ensuring your rifle operates flawlessly.
Understanding the AR-15 Hammer Spring's Role
The hammer spring is a vital component in the AR-15's firing mechanism. Its primary function is to provide the necessary force to drive the hammer backward after firing, recocking the weapon for the next shot. This seemingly simple action is essential for the semi-automatic functionality of the AR-15. A correctly oriented spring ensures smooth, reliable cycling, preventing potential malfunctions like failures to fire or light primer strikes.
Identifying the Correct Orientation
The AR-15 hammer spring isn't simply a coil; it features a specific orientation designed to work optimally with the hammer and its associated components. The spring's end with the slightly larger diameter should face away from the hammer, towards the receiver's rear.
Here’s a breakdown to help visualize:
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Larger Diameter End: This end should face the rear of the receiver, away from the hammer itself. Imagine it as a slight cup or indentation.
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Smaller Diameter End: This end makes contact with the hammer and sits within a corresponding recess.
Misaligning the spring can result in the following issues:
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Failure to Fully Cock the Hammer: The hammer might not fully retract after firing, resulting in a failure to fire on the subsequent shot.
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Light Primer Strikes: If the spring is misaligned or weakened, it might not provide sufficient force to strike the primer effectively, leading to a light strike and a failure to ignite the cartridge.
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Hammer Follow: In extreme cases of misorientation, the hammer can follow the bolt carrier group rearward after firing, potentially leading to damage or injury.
Step-by-Step Installation Guide
While the specific steps may vary slightly depending on your lower receiver and components, the fundamental principles remain consistent. Always consult your firearm's manual for detailed instructions.
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Disassemble Carefully: Before attempting any work on your firearm, always ensure it's unloaded and clear. Follow safe gun handling procedures meticulously.
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Examine the Spring: Inspect the hammer spring closely to ensure it isn't damaged or deformed. Replace it if necessary.
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Proper Placement: Position the hammer spring with the larger diameter end facing away from the hammer (towards the receiver's rear).
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Insert into the Hammer: Gently guide the smaller diameter end of the spring into the designated recess on the hammer.
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Reassemble: Reassemble the lower receiver, paying close attention to the proper placement of all components. Ensure all pins are securely seated and the firearm functions smoothly.
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Test Fire: After reassembly, test fire your AR-15 at a safe shooting range to ensure proper function.
Troubleshooting and Prevention
If you’re experiencing malfunctions after assembling your AR-15, double-check the hammer spring's orientation. A slight misalignment can easily cause significant problems.
Conclusion
The AR-15 hammer spring, while seemingly small, is a critical component for reliable firearm function. By understanding its proper orientation and following safe handling procedures, you can prevent malfunctions and maintain the reliability of your AR-15 rifle. Remember to always consult your owner's manual and seek guidance from experienced gunsmiths if you have any doubts or encounter difficulties during the assembly process. Safety should always be your top priority.
