How to Install AR10 Buffer Tube - Aero Precision M5 Build

Published on August 2, 2023
Duration: 9:06

This guide details the installation of an AR-10 buffer tube assembly, including two methods: one with a LAW Tactical folding adapter and a standard installation. It emphasizes proper lubrication, torque application using specialized tools, and securing the castle nut. The process involves careful alignment of the buffer tube retainer and spring for secure stock functionality.

Quick Summary

To install an AR-10 buffer tube, first lubricate the tube and receiver threads. For builds with a LAW Tactical folder, use its disposable tool for correct torque. For standard installations, thread the tube, engage the retainer spring and pin, then tighten the castle nut with an armor's wrench. Lubricate the buffer spring and tube before inserting them.

Chapters

  1. 00:00Introduction & Parts Overview
  2. 00:40Lubrication for New Parts
  3. 01:03Installing with LAW Tactical Folder
  4. 01:44LAW Tactical Folder: Initial Steps
  5. 02:09Using the Disposable Flange Tool
  6. 02:32Securing the LAW Tactical Folder
  7. 03:10Installing Buffer Tube with LAW Folder
  8. 03:33Engaging the Buffer Tube Retainer
  9. 03:53Tightening the Castle Nut (LAW Folder)
  10. 04:12Testing Buffer Tube Functionality
  11. 04:16Installing Buffer Spring and Buffer
  12. 04:44Standard Buffer Tube Installation (No Folder)
  13. 05:03Preparing for Standard Installation
  14. 05:09Threading the Buffer Tube
  15. 05:24Positioning the Locking Retainer
  16. 06:09Installing Retainer Spring and Retainer
  17. 06:24Engaging Retainer with Buffer Tube
  18. 06:54Tightening Castle Nut (Standard Install)
  19. 07:32Optional: Staking the Castle Nut
  20. 07:51Installing Buffer Spring and Buffer (Standard)
  21. 08:18Final Lubrication Recommendations
  22. 08:43Conclusion & Next Steps

Frequently Asked Questions

What are the key components needed to install an AR-10 buffer tube assembly?

You'll need the buffer tube itself, a castle nut, a buffer tube retainer spring, a buffer tube retainer, a buffer spring, and a buffer weight. For some builds, a LAW Tactical folding adapter and its specific components are also required.

How do you ensure the buffer tube is properly torqued when using a LAW Tactical folder?

The LAW Tactical folder comes with a disposable flange tool. You tighten the folder until this tool bends, which indicates that the correct torque has been applied, securing the adapter to the receiver.

What is the purpose of the buffer tube retainer and spring?

The buffer tube retainer and spring prevent the buffer tube from unscrewing from the lower receiver. The spring pushes the retainer into a groove on the buffer tube, locking it in place.

Why is lubricating the buffer tube and spring important for a new AR-10 build?

Lubricating the buffer tube and spring reduces friction during the cycling of the bolt carrier group. This is crucial for new builds to prevent malfunctions and ensure reliable operation from the start.

More Gunsmithing & DIY Videos You Might Like

More from 1st Shot Tactical

View all →