Understanding AR-15 CAM PIN WEAR: A Comprehensive Guide
When it comes to the AR-15, one component that often garners attention is the cam pin. This small but crucial part plays a significant role in the functioning of the firearm. However, over time, cam pin wear can occur, leading to potential issues. In this article, we delve into the details of AR-15 cam pin wear, exploring its causes, symptoms, and solutions.
What is an AR-15 Cam Pin?
The cam pin is a small, cylindrical pin that is used to secure the bolt carrier group (BCG) to the upper receiver in an AR-15 rifle. It is inserted into the cam pin slot on the BCG and the cam pin slot on the upper receiver. The cam pin’s primary function is to ensure that the BCG moves smoothly during the firing cycle.
Causes of AR-15 Cam Pin Wear
Several factors can contribute to cam pin wear:
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Repeated firing: The constant stress of firing a rifle can lead to wear on the cam pin over time.
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Quality of the cam pin: Low-quality cam pins may not be as durable as high-quality ones, leading to quicker wear.
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Improper lubrication: Insufficient or improper lubrication can cause excessive friction and wear on the cam pin.
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Contaminants: Dust, dirt, and other contaminants can cause wear and damage to the cam pin.
Symptoms of AR-15 Cam Pin Wear
Identifying cam pin wear is essential to prevent potential issues. Here are some common symptoms:
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Difficulty in cycling the action: If the cam pin is worn, it may be harder to cycle the action, and the rifle may not fire properly.
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Excessive play: Worn cam pins can cause excessive play in the BCG, leading to inconsistent performance.
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noises: Worn cam pins can produce unusual noises during the firing cycle.
Diagnosing and Fixing AR-15 Cam Pin Wear
Diagnosing cam pin wear is relatively straightforward. If you notice any of the symptoms mentioned above, it’s time to inspect the cam pin. Here’s how to do it:
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Remove the upper receiver from the rifle.
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Inspect the cam pin slot on the BCG and the upper receiver for wear or damage.
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Check the cam pin itself for signs of wear, such as flattened ends or a loose fit.
If you find that the cam pin is worn, there are a few options to fix the issue:
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Replace the cam pin: The most straightforward solution is to replace the worn cam pin with a new one. Ensure that the new cam pin is the correct size and material for your rifle.
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File the cam pin slot: If the slot is worn, you can file it down to restore its original shape. However, this is a temporary fix and may not be suitable for high-stress applications.
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Replace the BCG: In some cases, replacing the entire bolt carrier group may be necessary if the cam pin slot is severely worn.
Preventing AR-15 Cam Pin Wear
Preventing cam pin wear is crucial for maintaining the performance and longevity of your AR-15. Here are some tips:
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Use high-quality cam pins: Invest in high-quality cam pins to ensure durability and reduce the risk of wear.
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Proper lubrication: Regularly lubricate the cam pin and its surrounding components to reduce friction and wear.
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Clean your rifle: Keep your rifle clean and free of contaminants to prevent wear and damage to the cam pin.
In conclusion, understanding AR-15 cam pin wear is essential for maintaining the performance and reliability of your firearm. By identifying the causes, symptoms, and solutions, you can ensure that your AR-15 remains in top condition for years to come.
