Improved magazine increases weapons reliability: "The Army has begun fielding a new 5.56mm 30-round 'improved magazine' that delivers a significant increase in reliability for M-16 and M-4 weapons.
Bolstering the already high reliability ratings of the M-16 and M-4, the improved magazine reduces the risk of magazine-related stoppages by more than 50 percent compared to the older magazine variants, according to officials at Program Executive Office Soldier.
Identified by a tan-colored follower, more than 500,000 of the improved magazines have been fielded to units in Iraq, Afghanistan and the United States."