The Super Shooter Airsoft Air Nozzle is a high-end upgrade part that increases air compression by minimizing the air leakage caused by standard stock air nozzles. Super Shooter Airsoft has manufactured these air nozzles with not one but 2 internal O-rings that provides the ultimate seal between nozzle and cylinder head. Stock air nozzles are often made from plastic and wear out with use. The robust high-grade aluminum used to manufacture these air nozzles means that they are built to last. Professional installation of this product is highly recommended. Airsoft Station offers installation of most parts by professional airsmith technicians. For inquiries regarding installation of replacement and upgrade parts as well as other airsoft services please contact us.