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 components with Tetra Gun Grease, applying Loctite 242 to the buffer tube threads, and securing the assembly using an AR-15 combo wrench. Proper function of the buffer retainer is emphasized throughout the process.

Quick Summary

Install an AR-15 buffer assembly by first cleaning receiver threads and applying Tetra Gun Grease to the buffer spring and buffer. Secure the buffer tube with Loctite 242, holding down the buffer retainer during installation. Use an AR-15 combo wrench to snug the tube, then insert the buffer spring and buffer, ensuring the retainer properly holds the buffer in place.

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. These parts work together to manage the energy of the bolt carrier group during cycling.

What type of thread locker should be used for an AR-15 buffer tube?

Loctite 242 is recommended for securing the AR-15 buffer tube to the lower receiver. This medium-strength threadlocker prevents the tube from loosening due to recoil while still allowing for future removal.

How do you ensure the buffer retainer is properly installed?

When installing the buffer tube, you must hold down the buffer retainer. After the tube is snugged, ensure the retainer moves freely and correctly captures the buffer.

What lubricant is recommended for an AR-15 buffer assembly?

Tetra Gun Grease is suggested for lubricating the buffer spring and buffer. This ensures smooth operation and helps prevent wear on these critical components during the firearm's cycling process.

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