Although the weapon's rotary drive is theoretically quite reliable, its ammunition feed has been anything but: Marine pilots initially reported an alarmingly high jam rate (sometimes greater than 30%).
雖然武器的旋轉驅動在理論上非常可靠，但它的供彈已經問題連連：海軍陸戰隊飛行員最初報導其卡彈率高得驚人（有時大於30％）。