Why the M7 and 6.8x51mm are Bad Ideas

Published on December 6, 2025
Duration: 1:14

This review critiques the M7 rifle and the 6.8x51mm cartridge, arguing against their adoption based on flawed doctrine. The author suggests modern tactical challenges like extended range engagements and defeating advanced body armor are better addressed by alternative solutions like one-way attack drones, rather than simply increasing rifle caliber and weight.

Quick Summary

Ian McCollum critiques the M7 rifle and 6.8x51mm cartridge, arguing their adoption is based on flawed doctrine. He suggests modern tactical needs like extended range and defeating advanced body armor are better addressed by solutions like one-way attack drones rather than heavier rifles.

Chapters

  1. 00:00Introduction: M7 Program Critique
  2. 00:13Afghanistan Context & Engagement Gap
  3. 00:34Drones vs. New Rifles for Range
  4. 00:51Body Armor Penetration & High Pressure

Frequently Asked Questions

Why is the M7 rifle and 6.8x51mm cartridge considered a bad idea by Forgotten Weapons?

The critique focuses on the doctrine behind the M7 program. Ian McCollum argues that the perceived need for extended range, highlighted by experiences in Afghanistan, can be better met by modern solutions like attack drones rather than a heavier rifle caliber.

What tactical problems does the M7 rifle aim to solve?

The M7 is intended to address two main issues: extending infantry engagement range beyond that of the 5.56mm M4, and defeating advanced body armor used by near-peer adversaries.

What alternative solution is proposed for long-range engagements instead of the M7?

Instead of equipping every soldier with a heavier rifle, the suggestion is to utilize one-way attack drones deployed from vehicles like a Humvee to solve modern tactical problems requiring extended reach and suppression.

What is the main criticism regarding the M7's approach to defeating body armor?

The criticism suggests that relying solely on high chamber pressure, a characteristic of the 6.8x51mm cartridge, might not be the most effective or ideal solution for reliably defeating advanced body armor.

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