How to Measure the Length of an AR Barrel
Measuring the length of an AR barrel is a crucial step in ensuring that your firearm is properly fitted and functioning as intended. Whether you’re a hobbyist, a professional, or just someone looking to maintain their firearm, understanding how to measure the barrel length accurately is essential. In this article, we will explore various methods and tools to help you measure the length of your AR barrel with precision.
Understanding the Importance of Barrel Length
The barrel length of an AR firearm plays a significant role in its performance. It affects the bullet’s velocity, accuracy, and the overall shooting experience. A longer barrel typically results in higher velocity and improved accuracy, while a shorter barrel may be more compact and easier to maneuver. Knowing the exact length of your barrel is essential for making informed decisions about its use and maintenance.
Tools Needed for Measuring
Before diving into the measurement process, ensure you have the following tools at hand:
- Caliper: A caliper is a versatile tool that can measure both internal and external dimensions. It is essential for measuring the barrel length accurately.
- Barrel Length Gauge: A specialized gauge designed specifically for measuring AR barrels. This tool provides a quick and precise measurement.
- Measuring Tape: A flexible measuring tape can be used to measure the overall length of the firearm, including the barrel.
Measuring the External Length of the Barrel
1. Place the barrel on a flat, stable surface.
2. Use the caliper to measure the external diameter of the barrel at its widest point. Record this measurement.
3. Wrap the measuring tape around the barrel, ensuring it is snug but not too tight. Record the overall length of the barrel.
4. Subtract the external diameter measurement from the overall length to obtain the barrel’s length.
Measuring the Internal Length of the Barrel
1. Insert the barrel length gauge into the barrel, ensuring it is seated properly.
2. Use the caliper to measure the internal diameter of the barrel at the gauge’s widest point. Record this measurement.
3. Remove the gauge and measure the overall length of the barrel, as described in the previous section.
4. Subtract the internal diameter measurement from the overall length to obtain the barrel’s length.
Measuring the Overall Length of the Firearm
1. Place the firearm on a flat, stable surface.
2. Use the measuring tape to measure the overall length of the firearm, including the barrel, magazine, and stock.
3. Record this measurement for future reference.
Table: Comparison of Measurement Methods
| Method | Accuracy | Time | Tools Required |
|---|---|---|---|
| Caliper and Measuring Tape | High | Medium | Caliper, Measuring Tape |
| Barrel Length Gauge | High | Low | Barrel Length Gauge |
Conclusion
Measuring the length of an AR barrel is a straightforward process that requires the right tools and attention to detail. By following the steps outlined in this article, you can ensure that you have an accurate measurement of your barrel’s length. This information will help you make informed decisions about your firearm’s use and maintenance, ultimately enhancing your shooting experience.
