M20 75mm Recoilless Rifle: When the Bazooka Just Won't Cut It

Published on March 8, 2018
Duration: 10:59

This guide details the operational technique for the M20 75mm Recoilless Rifle, emphasizing its breech-loading mechanism and critical safety considerations regarding its powerful backblast. It covers aiming, firing, and post-firing procedures, drawing from expert insights provided by Ian McCollum of Forgotten Weapons. The M20's historical context and unique recoilless principle are highlighted, underscoring its role as a significant piece of WWII and Korean War ordnance.

Quick Summary

The M20 75mm Recoilless Rifle, discussed by Ian McCollum, was designed to defeat WWII tank armor. It fires a 75mm projectile up to 4 inches thick with HEAT rounds, effective to 400 yards. Its recoilless mechanism expels gas rearward, but creates a dangerous backblast zone requiring extreme caution.

Chapters

  1. 00:00Introduction to M20 75mm Recoilless Rifle
  2. 00:30Historical Context: WWII Tank Armor
  3. 01:32Recoilless Mechanism Explained
  4. 03:16Development and Service History
  5. 04:13Ammunition and Performance
  6. 05:35Mounting and Optics
  7. 06:39Operation and Safety Warnings
  8. 09:13Modern Application

Frequently Asked Questions

What was the primary purpose of the M20 75mm Recoilless Rifle?

The M20 75mm Recoilless Rifle was developed during World War II to counter increasingly thick tank armor, offering greater anti-armor capability than earlier weapons like the 2.36-inch Bazooka.

How does a recoilless rifle like the M20 work?

A recoilless rifle utilizes perforated cartridge cases and vent holes in the breech to allow propellant gases to escape rearward, neutralizing recoil. This allows for a lighter weapon capable of firing a substantial projectile.

What are the key performance specifications of the M20 75mm Recoilless Rifle?

The M20 fires a 75mm projectile weighing approximately 22 lbs, with HEAT rounds capable of penetrating 4 inches of armor. Its effective range is around 400 yards, with a theoretical maximum range of about 7000 yards.

What are the safety concerns when operating an M20 75mm Recoilless Rifle?

The most critical safety concern is the extreme backblast, which is as powerful as the muzzle blast and requires a large, clear area behind the weapon. Proper handling and awareness of this danger zone are paramount.

More Tactical & Gear Videos You Might Like

More from Forgotten Weapons

View all →