How To Install a Ejection Port Cover on AR Rifles

Published on December 29, 2023
Duration: 3:34

This guide details the straightforward installation of an ejection port cover (dust cover) on AR-15 and AR-style rifles. It covers the necessary tools, including optional pliers and a brass hammer for stubborn pins, and presents two methods for securing the dust cover spring. The process is presented as one of the easiest installs for an AR platform.

Quick Summary

Installing an AR-15 ejection port cover involves positioning the cover, guiding the long pin, and then securing the dust cover spring. You can use your fingers to spin the spring's short tail and seat the pin, or employ small curved pliers for a more controlled grip on the spring.

Chapters

  1. 00:00Introduction to Dust Cover Installation
  2. 00:31Recommended Tools for Dust Cover Install
  3. 01:07AR10 Builder Specifics & Related Guides
  4. 01:33Step 1: Barrel Nut Check
  5. 02:02Step 2: Position Dust Cover and Pin
  6. 02:16Step 3: Install Dust Cover Spring
  7. 02:23Method 1: Using Fingers for Spring
  8. 02:36Method 2: Using Pliers for Spring
  9. 02:49Step 4: Fully Seat Dust Cover Pin
  10. 03:07Next Steps in Upper Receiver Assembly
  11. 03:16AT3 Tactical Giveaway & Conclusion

Frequently Asked Questions

What tools are needed to install an AR-15 ejection port cover?

You will need the dust cover assembly itself, which includes the cover, a long pin, and the spring. Your fingers are essential. Optional tools that can be helpful include small curved pliers for manipulating the spring and a brass hammer for gently tapping the pin if it's tight.

How do you install the dust cover spring on an AR-15?

Position the dust cover spring with its long tail flat against the dust cover. Then, either use your fingers to spin the short tail end and hold it while seating the pin, or use small curved pliers to hook and wrap the spring tail before locking it in place.

What if the dust cover pin is difficult to install on my AR-15?

If the dust cover pin is stubborn, especially with heavily cerakoted parts, apply firm finger pressure first. If that doesn't work, a few light taps with a brass hammer can help persuade the pin into place without damaging the receiver.

Can I install an ejection port cover if my barrel nut isn't installed yet?

Yes, you can still install the ejection port cover even if the barrel nut is not yet installed. The steps for installing the dust cover remain the same. However, if the barrel nut is present, you should ensure it's properly installed before proceeding with other upper receiver components.

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