checking ar-15 headspace,Checking AR-15 Headspace: A Comprehensive Guide

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 issues.

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:

1. Remove the bolt and barrel from the firearm.
2. Insert the headspace gauge into the chamber, ensuring it is fully seated.
3. Secure the firearm in a gun vise, using the locking block to prevent movement.
4. Use the caliper to measure the gauge’s thickness at the bolt face and at the rifling.
5. Compare the measurements to the manufacturer’s specifications for your firearm’s chamber length.

Here is a table showing the typical headspace specifications for various chamber lengths:

Remember to refer to your firearm’s specific specifications for accurate measurements.

Common Headspace Issues and Solutions

Here are some common headspace issues and their solutions:

• Tight Headspace: If the headspace is too tight, you may experience malfunctions or reduced accuracy. To fix this, you can chamfer the case mouth of the ammunition or use a larger headspace gauge.
• Loose Headspace: If the headspace is too loose, it can lead to excessive pressure on the cartridge case and reduced accuracy. To fix this, you can use a smaller headspace gauge or chamfer the case mouth of the ammunition.
• Excessive Case Length: If the case is too long, it may not chamber properly. To fix this, you can trim the case to the correct length using a chamfering tool.

Always consult a professional gunsmith if you are unsure about making any modifications to your firearm.

Conclusion

Checking the headspace of your AR-15 is an essential step in maintaining the firearm’s accuracy and reliability. By using the proper tools and techniques, you can ensure that your firearm operates smoothly and safely. Remember to refer to your firearm’s specifications and consult a professional if needed.