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Checking AR-15 Headspace: A Comprehensive Guide
Ensuring proper headspace in your AR-15 is crucial for the firearm’s accuracy and reliability. Headspace refers to the distance between the bolt face and the rifling in the barrel. If the headspace is too tight or too loose, it can lead to malfunctions, reduced accuracy, or even safety issues. In this detailed guide, we will explore various aspects of checking AR-15 headspace, including tools, techniques, and common problems.
Tools Needed for Checking AR-15 Headspace
Before you begin checking the headspace of your AR-15, you’ll need the following tools:
- AR-15 headspace gauge
- Caliper
- Chamfering tool
- Locking block
- Gun vise
- Gunsmithing hammer
- Replacement bolt
These tools are essential for safely and accurately measuring the headspace of your firearm.
Understanding the Importance of Headspace
Proper headspace is vital for the following reasons:
- Ensures consistent chambering of ammunition
- Prevents excessive pressure on the cartridge case
- Reduces the risk of malfunctions
- Improves accuracy
By maintaining the correct headspace, you can ensure that your AR-15 operates smoothly and reliably.
How to Check AR-15 Headspace
Follow these steps to check the headspace of your AR-15:
- Remove the bolt and bolt carrier group from the firearm.
- Insert the headspace gauge into the chamber, ensuring it is fully seated.
- Secure the firearm in a gun vise, using the locking block to prevent movement.
- Use the caliper to measure the gauge’s thickness at the bolt face and at the rifling.
- Compare the measurements to the manufacturer’s specifications for your specific firearm and ammunition.
It’s important to note that the headspace gauge should not be forced into the chamber. If it is, it may indicate a problem with the chamber or the gauge itself.
Common Headspace Problems and Solutions
Here are some common headspace problems and their solutions:
| Problem | Solution |
|---|---|
| Headspace too tight | File the chamber or use a reamer to expand it slightly. |
| Headspace too loose | Chamfer the bolt face or use a reamer to reduce the chamber size. |
| Excessive pressure on the cartridge case | Adjust the headspace to the correct specification. |
| Malfunctions | Check the headspace and ensure it is within the manufacturer’s specifications. |
Always consult a professional gunsmith if you are unsure about making any adjustments to your firearm.
Preventing Headspace Issues
Here are some tips to help prevent headspace issues:
- Regularly inspect your firearm for signs of wear or damage.
- Use high-quality ammunition that is designed for your specific firearm.
- Store your firearm in a clean, dry environment.
- Follow the manufacturer’s maintenance and cleaning instructions.
By taking these precautions, you can help ensure that your AR-15 remains reliable and accurate for years to come.
Conclusion
Checking the headspace of your AR-15 is an essential part of maintaining the firearm’s performance and safety. By using the proper tools and techniques, you can ensure that your firearm operates smoothly and reliably. Remember to consult a professional gunsmith if you are unsure about making any adjustments to your firearm.
