For those seeking ammunition that performs consistently, Barnes RangeAR Ammunition delivers higher velocity, flatter trajectory and ultimate accuracy. First quality factory-fresh brass is paired with a lead-free, copper-jacketed, zinc core projectile. The robust zinc core provides excellent performance in AR's with quick twist barrels. Specialized propellants optimized for AR's ensure that RangeAR Ammunition offers superior performance in these high performance platforms of any barrel length.