Can a Fire Damaged PSA AR-15 be saved? - Part 3

Published on June 12, 2022
Duration: 11:09

This video details the process of disassembling a fire-damaged AR-15 upper receiver, focusing on separating the barrel from the receiver. The instructor demonstrates removing a seized gas tube using specialized tools and techniques, then tackles the challenging removal of a potentially warped or corroded barrel nut. The process involves liberal use of penetrating oil, heat, and percussive force, followed by submersion in a rust-dissolving solution.

Quick Summary

Disassembling a fire-damaged AR-15 upper receiver involves removing the gas tube first, then tackling the barrel nut. Use a gas tube wrench for the tube and penetrating oil, heat, and force for a stuck barrel nut. Submerge parts in Evapo-Rust for thorough cleaning.

Chapters

  1. 00:00Introduction and Evapo-Rust Soak
  2. 00:54Gas Tube Removal
  3. 01:39Using a Gas Tube Wrench
  4. 02:53Attempting Barrel Nut Removal
  5. 04:00Applying Heat and Penetrating Oil
  6. 07:30Upper Receiver and Components
  7. 08:36Barrel Warping Concerns
  8. 09:16Submerging Components for Cleaning
  9. 09:34New Roll Pins and Springs
  10. 09:53Ejector vs. Selector Spring
  11. 10:49Preview of Next Steps

Frequently Asked Questions

How do you remove a seized gas tube from a fire-damaged AR-15 upper receiver?

First, remove the gas tube roll pin. Then, use a specialized gas tube wrench to grip the tube firmly. Rotate it left and right to loosen, then push it rearward to extract it from the upper receiver.

What are the key steps to removing a fire-damaged AR-15 barrel nut?

After removing the gas tube, attempt to unscrew the barrel nut. If it's stuck, apply penetrating oil generously and allow it to soak. Heat may be necessary, followed by significant force using appropriate tools.

Can Evapo-Rust be used on fire-damaged AR-15 parts?

Yes, Evapo-Rust is effective for soaking and cleaning fire-damaged AR-15 components to remove rust and residue. However, avoid applying heat directly to Evapo-Rust residue as it can become sticky.

What potential issues can arise from fire damage to an AR-15 upper receiver?

Fire damage can cause the upper receiver to warp or twist, making components like the barrel nut extremely difficult to remove. It can also melt or damage the handguard and other attached parts.

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