The M4/M4A1 5.56mm Carbine is a lightweight, gas operated, air cooled, magazine fed, selective rate, shoulder fired weapon with a collapsible stock. It is now the standard issue firearm for most ...

Sen. Tom Coburn, R-Okla., a leading critic of the M4, said Thursday the Army needs to move quickly to acquire a combat rifle suited for the extreme conditions U.S. troops are fighting in.

The Army announced today it is formally concluding its Individual Carbine competition without selecting a winner to replace the M4 Carbine. “None of the carbines evaluated during the testing ...

“The M4 carbine, and, to a lesser degree, the M4A1 have shortcomings, but they can be ameliorated with modern free-floating hand guards, lighter triggers, heavier barrels and improved magazines ...

The M4 Carbine is the Army's primary individual combat rifle for Infantry, Ranger, and Special Operations forces. Since its introduction in 1991, the M4 carbine has proven its worth on the ...