Lonex's XM177/CAR-15 Reinforced Cylinder with Aluminum Piston Head Set is a top choice for airsoft players and service technicians, thanks to its high-quality materials and long-lasting design. This set is specifically intended for use in XM177/CAR-15 replicas and includes a steel cylinder, air-sealed nozzle, aluminum cylinder head, and ventilated, absorbing piston head. With a weight of 85g and top-notch manufacturing, Lonex is a leading brand for tuning products and is perfect for enhancing the power and durability of your replicas.