Rock River AR Pistol Buffer Tube

Published on January 13, 2014
Duration: 7:16

This guide details the installation of a Rock River Arms pistol buffer tube, a crucial step for AR pistol builds. It covers essential safety checks, disassembly, the use of specialized tools like a spanner wrench, and proper reassembly techniques, including the application of threadlocker. The guide also touches upon compatibility with accessories like the Sig SB15 brace and Magpul ASAP sling attachment.

Quick Summary

The Rock River Arms pistol buffer tube features a fluted and knurled exterior for enhanced grip. Its installation requires careful attention to the lack of a standard indexing slot, often necessitating the use of an ambidextrous sling attachment point like the Magpul ASAP or modification of a standard end plate. Proper threadlocker application and safety checks are essential.

Chapters

  1. 00:00Introduction to Rock River Arms Pistol Buffer Tube
  2. 00:20Preparation and Safety Check
  3. 00:44Disassembly of the AR Pistol
  4. 01:06Removing the Extension Tube
  5. 02:13Compatibility and Retaining Rings
  6. 03:19Installation of the New Buffer Tube
  7. 04:57Final Assembly and Testing
  8. 05:41Sig SB15 Brace and Legal Considerations

Frequently Asked Questions

What are the key features of the Rock River Arms pistol buffer tube?

The Rock River Arms pistol buffer tube is known for its high-quality finish, featuring distinct fluting and knurling for improved grip and aesthetics. A notable design detail is its lack of a standard indexing slot for end plate nubs.

How do you install a Rock River Arms pistol buffer tube?

Installation involves ensuring the firearm is unloaded, disassembling the lower receiver, removing the old tube, applying Loctite 242 Blue to the new tube's threads, and carefully screwing it in while managing the buffer retainer pin. Finally, reassemble the buffer, spring, and upper receiver.

What are the compatibility considerations for the Rock River Arms pistol buffer tube?

Due to its lack of a standard indexing slot, the Rock River Arms tube requires alternative methods for securing the receiver end plate. Options include grinding down the nub on a standard end plate or using an ambidextrous sling attachment point like the Magpul ASAP.

What legal considerations apply to AR pistols?

When building or modifying an AR pistol, it's crucial to adhere to ATF regulations. This includes avoiding vertical foregrips and ensuring the firearm's configuration does not classify it as a Short-Barreled Rifle (SBR), which carries specific legal requirements and tax implications.

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