How to Install an AR-15 Buffer Assembly Presented by Larry Potterfield of MidwayUSA

Published on July 19, 2018
Duration: 2:16

This guide details the installation of an AR-15 buffer assembly, presented by Larry Potterfield of MidwayUSA. It covers cleaning receiver threads, lubricating critical components like the buffer spring and retainer, and the proper use of Loctite 242 for securing the buffer tube. The video emphasizes ensuring the buffer retainer moves freely and the buffer itself is correctly seated for optimal function.

Quick Summary

To install an AR-15 buffer assembly, first clean receiver threads and lubricate the retainer spring, retainer, buffer spring, and buffer. Apply Loctite 242 to the buffer tube threads, screw it in while holding the retainer down, and snug with a wrench. Finally, insert the buffer spring and buffer, ensuring the retainer holds it properly.

Chapters

  1. 00:00Introduction and Parts Overview
  2. 00:28Preparation and Cleaning
  3. 00:38Lubrication
  4. 01:00Retainer and Buffer Tube Installation
  5. 01:35Tightening and Final Assembly
  6. 02:02Final Check

Frequently Asked Questions

What are the main components of an AR-15 buffer assembly?

The AR-15 buffer assembly typically includes the buffer tube, buffer spring, buffer, buffer retainer, and retainer spring. Each part plays a role in managing the energy of the bolt carrier group during operation.

What type of threadlocker is recommended for installing an AR-15 buffer tube?

Loctite 242, a medium-strength blue threadlocker, is recommended for securing the AR-15 buffer tube to the lower receiver. This ensures it stays tight without being impossible to remove later.

Why is lubrication important for the AR-15 buffer assembly?

Lubricating components like the buffer spring, buffer, retainer spring, and retainer with gun grease ensures smooth operation and prevents wear. This contributes to reliable cycling of the firearm.

How do you ensure the AR-15 buffer assembly is installed correctly?

After installing the buffer tube, ensure the buffer retainer moves freely. Then, insert the buffer spring and buffer, verifying the buffer moves smoothly within the tube and is held by the retainer.

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