Fun With OOBs: An Austen MkII at the Range

Published on November 19, 2020
Duration: 1:49

This guide details how to approach and troubleshoot out-of-battery (OOB) discharges, as demonstrated by Ian McCollum with the Austen MkII. It emphasizes recognizing the signs of an OOB event, safe clearing procedures, and the importance of ceasing fire if persistent malfunctions occur. McCollum, a recognized expert in historical firearms, highlights safety precautions necessary when handling such weapons.

Quick Summary

An out-of-battery (OOB) discharge occurs when a firearm fires a cartridge before it is fully seated in the chamber. Signs include smoke from the ejection port, not the muzzle. Expert Ian McCollum advises ceasing fire and clearing the weapon if this happens, especially with blowback guns like the Austen MkII, prioritizing shooter safety.

Chapters

  1. 00:00Introduction to Austen MkII
  2. 00:21Semi-Auto Firing & Malfunctions
  3. 00:46Full-Auto Firing & OOB Discharge
  4. 01:01Explaining Out-of-Battery Discharges
  5. 01:25Conclusion & Range Safety

Frequently Asked Questions

What is an out-of-battery discharge on a firearm?

An out-of-battery (OOB) discharge occurs when a firearm fires a cartridge before it is fully seated in the chamber. This is particularly concerning with blowback-operated firearms like the Austen MkII, as it can direct hot gases and debris towards the shooter.

How can you identify an out-of-battery discharge?

Key indicators of an out-of-battery discharge include a loud report and excessive smoke erupting from the ejection port or receiver area, rather than solely from the muzzle. This suggests the cartridge fired before proper chambering.

What are the safety precautions for submachine guns like the Austen MkII?

When handling submachine guns, especially those with blowback operation, maintain proper hand placement away from the ejection port. Be vigilant for malfunctions and out-of-battery discharges, and cease firing if they occur.

What should you do if your Austen MkII experiences an out-of-battery discharge?

If an out-of-battery discharge occurs, immediately stop firing. Safely clear the firearm, checking for any debris or unburnt powder. If the issue persists or is severe, it's best to end the range session and have the firearm inspected by a qualified gunsmith.

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