The U.S. Army is considering several upgrades to the M4A1 Carbine that could improve its accuracy and performance and change the weapon's appearance. Army weapons and contracting officials recently ...

The M4A1+ effort was designed to look for add-on components that will “seamlessly integrate with the current M4A1 Carbine … without negatively impacting or affecting the performance or operation of ...

Several months ago, the Army’s Project Engineering Office for Individual Weapons announced it was looking for sources to pursue what it called M4A1+, a series of upgrades to the M4A1 carbine that will ...

While the Army continues to upgrade existing M4s to the deadlier, more reliable M4A1, Army leaders have mapped out a whole new list of additional improvements to the legacy rifle. The Army has ...

In 2013, the gun world changed. For more than a decade, standard-issue M4 and M4A1 carbines used by infantry in the U.S. Army had been manufactured by just one company -- Colt Defense. A competing bid ...