Hands-on experience: Senior Warrant Officer Russton B. Kramer, who has fought in Afghanistan and was awarded the Silver Star for his bravery for action in Iraq, says of the Army's standard-issue M4 carbine, "The reliability is not there."

Hands-on experience: Senior Warrant Officer Russton B. Kramer, who has fought in Afghanistan and was awarded the Silver Star for his bravery for action in Iraq, says of the Army's standard-issue M4 carbine, "The reliability is not there."