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Tag Archives: m4

The Build Episode III: Mike Keenan’s M4A1-Type Tactical AR-15 Carbine Work-Gun Clone Build, and Jeff (Gurwitch) and Mike’s 15 Rounds of Fury Shooting Drill! (Video!)

By Jeff Gurwitch October 29, 2019 Last updated on 10/29/19. In this episode, I sit down with Mike Keenan (retired Navy pilot), who served with me in Afghanistan, to go over the M4A1-type work-gun clone he built in virtually the exact configuration of the customized/modified M4A1 carbine he carried on the ground while supporting SF (Special Forces) operations down range. ... Read More »

The Big M4 Myth: ‘Fouling caused by the direct impingement gas system makes the M4/M4A1 Carbine unreliable.’

By Mike Pannone [email protected] All photos contained in this article were taken by Mike Pannone for DefenseReview.com, and are copyrighted. Mike Pannone and DefenseReview.com own the copyright on these photos. March 19, 2010 Here’s my question for those that subscribe to the direct impingement fouling concept: I fired 2400 rounds of M193 through a 14.5” M4-type upper receiver from Bravo ... Read More »

AR-15/M4/M4A1 Carbine Reliability Issues: Why They Occur, and Why They’re Our Fault!

Why M4's have reliability issues…and why it's our fault! By Michael Pannone December 24, 2008 I fired 15,000 rounds through a semi-automatic M4/M4A1-type direct-gas-impingement (DGI) carbine in 31 weeks without a single malfunction attributable to anything except bad ammunition or bad magazines, with a grand total of 9 malfunctions. The least number of rounds fired between cleanings was 960 rounds, ... Read More »