How to Check for a Barrel Obstruction

Published on April 2, 2026
Duration: 1:09

This video demonstrates the correct procedure for checking a firearm's barrel for obstructions. It emphasizes that looking down the barrel from the muzzle end and seeing no 'daylight' is not a reliable indicator of an obstruction, as the bolt face will naturally block the view. The correct method involves disassembling the firearm, removing the bolt carrier group, and then inspecting the barrel from the breech end.

Quick Summary

To correctly check for a barrel obstruction, first ensure the firearm is unloaded. Disassemble the firearm by separating the upper and lower receivers and removing the bolt carrier group. Then, look through the barrel from the breech end to inspect the rifling for any blockages.

Chapters

  1. 00:00Introduction: Barrel Obstruction Issue
  2. 00:05Misconception: Checking for Daylight
  3. 00:24The Danger of Barrel Obstructions
  4. 00:27Correct Procedure: Disassembly
  5. 00:30Removing the Bolt Carrier Group
  6. 00:33Why Looking from Muzzle is Wrong
  7. 00:47Inspecting from the Breech
  8. 00:51Checking Rifling for Obstructions

Frequently Asked Questions

What is the correct way to check for a barrel obstruction in a firearm?

The correct method involves ensuring the firearm is unloaded, then disassembling it to remove the bolt carrier group. You should then look through the barrel from the breech end to inspect the rifling for any obstructions.

Why is looking for 'daylight' down the barrel not a reliable way to check for obstructions?

Looking down the barrel from the muzzle end will always appear black because the bolt face is present and blocks the light. This does not indicate an actual obstruction within the barrel itself.

What are the risks associated with a barrel obstruction?

A barrel obstruction is extremely dangerous. It can lead to catastrophic failure of the firearm when fired, potentially causing severe injury or death to the shooter and bystanders.

What parts of an AR-15 need to be removed to check the barrel for obstructions?

To properly check for a barrel obstruction on an AR-15 style rifle, you need to separate the upper and lower receivers and then remove the bolt carrier group.

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