The M79 Thumper: America’s Favorite Grenade Launcher

Published on June 18, 2025
Duration: 18:00

This guide details the operation and unique features of the M79 Thumper grenade launcher, famously known as the 'Thumper' or 'Blooper.' It covers its break-action mechanism, swiveling trigger guard for glove use, and effective range with standard 40mm rounds. The guide also touches upon the use of 40mm practice rounds and the specialized 'Hornet's Nest' adapter for .22 LR ammunition, offering insights into its historical context and tactical applications.

Quick Summary

The M79 grenade launcher, known as the 'Thumper' or 'Blooper,' is an iconic firearm with a break-action, single-shot mechanism. It features a unique swiveling trigger guard for use with gloves and has an effective range of 350-400 meters with standard 40mm rounds. Specialized accessories like the 'Hornet's Nest' adapter allow for firing multiple .22 LR rounds simultaneously.

Chapters

  1. 00:00Introduction to the M79 Thumper
  2. 01:2340mm Chalk Rounds Explained
  3. 02:59Special Operations and Sawed-off Versions
  4. 08:00Unique Design Features: Swiveling Trigger Guard
  5. 08:53History and Development of the M79
  6. 11:05The Hornet's Nest 40mm Adapter
  7. 13:15Non-Lethal Munitions Discussion
  8. 15:20Live Fire Testing: Hornet's Nest

Frequently Asked Questions

What is the M79 grenade launcher famously known as?

The M79 grenade launcher is famously known as the 'Thumper' or 'Blooper.' Its iconic status is recognized in military history and popular culture, having appeared in numerous films.

How does the M79's swiveling trigger guard work?

The M79 features a unique swiveling trigger guard. By pressing a button, the guard can be moved to either side, allowing the operator to fire the weapon comfortably even when wearing heavy winter gloves.

What is the 'Hornet's Nest' for the M79?

The 'Hornet's Nest' is a specialized 40mm adapter for the M79 grenade launcher that holds fifteen .22 Long Rifle cartridges. When fired, all fifteen rounds discharge simultaneously, creating a high-volume, short-range effect.

What are 40mm 'chalkies' used for?

40mm practice rounds, affectionately called 'chalkies,' contain orange chalk instead of high explosives. They are used for training purposes, allowing users to mark impact points at a distance and assess accuracy safely.

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