http://www.washingtontimes.com/news/...#disqus_thread
A competing rifle outperformed the Army’s favored M4A1 carbine in key firings during a competition last year before the service abruptly called off the tests and stuck with its gun, according to a new confidential report.
The report also says the Army changed the ammunition midstream to a round “tailored” for the M4A1 rifle. It quoted competing companies as saying the switch was unfair because they did not have enough time to fire the new ammo and redesign their rifles before the tests began.
Exactly how the eight challengers — and the M4 — performed in a shootout to replace the M4, a soldier’s most important personal defense, has been shrouded in secrecy.
The Times earlier this year published a two-part series on the M4 revealing that, as the war on terror began, the carbine flunked several reliability tests when subjected to rapid fire. The Times spoke with soldiers who had used the M4 in intense combat.
They said the magazine is tinny and subject to jamming. The gun itself requires constant cleaning.
One Green Beret said he and his colleagues, once in theater, rebuild the gun with better parts.