Marine Corps M16 rifles and M4 carbines are passing a new safety check designed to catch a potentially dangerous glitch in the selector switch that has surfaced in Army weapons. The Army's weapons to ...

U.S. Army units have reported about 3,000 M4 carbines have failed a safety inspection because of a potential glitch in the selector switch that could lead to unintended discharges, Military.com has ...

Unix Power Tools. Chief among the the unsung heroes of Linux and Unix is m4. Unsung? Well, for instance, although m4 has been a standard part of Unix since version 7, no mention is made of it in that ...