M4 Carbine torture test

Steve Johnson
by Steve Johnson

The NYTimes.com has published two videos recorded by Colt Defense. They compare the M4 and the M4A1.

M4 Barrel bursts after 535 rounds.
M4A1 still going after 911 rounds (although gas tube melts preventing semi or full auto fire)

The NYTimes reports

That video shows the same test with an M-4 equipped with a thicker, heavier barrel, which is used on a specialized carbine, known as the M-4A1. This variant is carried by some Special Operations users.

Colt Defense and the Army have been discussing making the change to a heavier barrel for several months and appear likely to begin requiring standard-issue rifles to have the barrel previously manufactured for the M-4A1.

Sounds like Colt is going on the PR offensive.

[ Many thanks to all the readers who emailed in these videos. ]

Steve Johnson
Steve Johnson

I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!

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  • ERIC 1/75 ERIC 1/75 on Aug 05, 2010

    @ MARSH, HOW MANY BASES HAVE YOU BEEN TO WITH ONLY 12 PEOPLE IN IT, MORE OVER SO, HOW MANY BASES (PROPERLY CALLED POST WHEN IN REFERENCE TO ACTUAL ARMY SOLDIERS) HAVE YOU BEEN AT WITH SEVERAL HUNDRED PEOPLE ATTACKING, LARGE FORMATIONS HAVE ATTEMPTED TO ATTACK POST INSTALLMENTS BUT FAILED (IN EPIC PROPORTIONS) DUE TO THE INTERVENTION OF PREDITOR DRONES, SATALITE IMAGING AND GOOD OLD FASHION AIR STRIKES. I THINK THE BASE YOU ARE REFERENCING TO IS YOUR HOUSE, AND THE HUNDREDS OF ENEMIES YOU ARE TALKING ABOUT ARE IMAGINARY. THIS IS NOT YOUR GRANDPAS WAR MARSH.

  • Scott Burton Scott Burton on Jan 17, 2013

    Does this Level IV plate ( http://www.engardebodyarmor... stop M4 and M4A1 bursts?

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