Even without those extenuating circumstances, however, there have been problems. A December 2006 survey external link, conducted on behalf of the Army by CNA Corp., conducted over 2,600 interviews with Soldiers returning from combat duty. The M4 received a number of strong requests from M-16 users, who liked its smaller profile. Among M4 users, however, 19% of said they experienced stoppages in combat – and almost 20% of those said they were “unable to engage the target with that weapon during a significant portion of or the entire firefight after performing immediate or remedial action to clear the stoppage.” The report adds that “Those who attached accessories to their weapon were more likely to experience stoppages, regardless of how the accessories were attached [including via official means like rail mounts].” Since “accessories” can include items like night sights, flashlights, etc., their use is not expected to go away any time soon.
US Army Ranger Capt. Nate Self, whose M4 jammed into uselessness during a 2002 firefight after their MH-47 Chinook was shot down in Afghanistan’s Shah-i-kot Mountains, offers another case. He won a Silver Star that day – with another soldier’s gun – and his comments in the Army Times article appear to agree that there is a problem with the current M4 design and specifications.