How to Properly Install an AR Buffer Retainer Spring

Justin Sorv
3 min readApr 16, 2024

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Are you into firearms, or are you a gun enthusiast?

If the answer is yes, then you must understand your weapon’s parts and how they function. Well, knowing that is crucial. Today, we’re going to delve into one essential component of an AR-15 rifle. It is the buffer retainer spring. This small but vital part plays a significant role. It ensures your rifle operates smoothly and reliably. In this guide, we’ll walk you through the steps of adequately installing an AR 15 buffer retainer spring.

Understanding the Buffer Retainer Spring

Before we jump into the installation process, let’s briefly discuss what the buffer retainer spring does. In an AR-15, buffer retainer spring is responsible for retaining the buffer. It also handles the buffer spring within the receiver extension (buffer tube). It prevents these components from sliding out of the back of the rifle during operation.

Tools You’ll Need

Before you start, make sure you have the following tools ready:

  1. AR-15 lower receiver assembly (with the buffer tube removed)
  2. Buffer retainer spring
  3. Buffer retainer
  4. Flathead screwdriver or punch tool
  5. Safety glasses (always wear eye protection when working on firearms)

Step-by-Step Installation Guide

  1. Prepare Your Work Area: Find a well-lit and clean workspace to perform the installation. Ensure there are no distractions and that you have enough room to maneuver.
  2. Inspect Parts: Before installation, inspect the AR 15 buffer retainer spring. Look out for any damage or defects. Replace any damaged parts before proceeding.
  3. Insert Buffer Retainer: Begin by inserting the buffer retainer into the hole. It is located in the rear of the lower receiver. The flat side of the retainer should face outward.
  4. Install Buffer Retainer Spring: Take the buffer retainer spring. Place one end over the buffer retainer. Use a flathead screwdriver or punch tool to compress the spring. Then slide it into the recessed area next to the retainer.
  5. Check Retainer Position: Once the spring is installed, ensure that the buffer retainer moves freely. However, it should be held in place securely by the spring tension.
  6. Test Functionality: The buffer retainer and spring are kept in one place. Perform a function check by inserting an empty magazine into the lower receiver. Cycle the charging handle. Observe if the buffer retainer engages with the magazine catch properly.
  7. Final Inspection: After completing the installation and function check, visually inspect the buffer retainer and spring. Ensure they are correctly seated and functioning as intended.
  8. Reassemble Lower Receiver: If everything checks out, proceed to reassemble the lower receiver. You can reassemble it by reinstalling the buffer tube, buffer, buffer spring, and any other components you removed.

Tips for Success

  • Patience is Key: Take your time during the installation process. Avoid damaging any parts or causing misalignment.
  • Use Proper Tools: A flathead screwdriver or punch tool designed for firearms work will make the installation smoother. It prevents damage to the buffer retainer and spring.
  • Double-Check Everything: Before testing the functionality, double-check that all parts are installed correctly and securely.

Conclusion

Correctly installing an AR-15 buffer retainer spring is a fundamental skill for any AR-15 owner or enthusiast. By following these step-by-step instructions and using the right tools, you can ensure that your rifle functions safely. Remember to always focus on safety and attention to detail when working on firearms. With practice, you’ll become proficient in maintaining and upgrading your AR-15 rifle’s components. To get a durable and high-quality AR 15 buffer retainer spring, connect with a reliable name- C & J Spring.

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Justin Sorv
Justin Sorv

Written by Justin Sorv

I have dedicated a couple of my years to creative writing at one of the Top-leading companies in the US, Canada, UK & Australia.

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