At long last the day of release is upon us! Our exclusive X Products SCU has been redesigned to be tougher perform better and look sharper than any other product of its kind. This 100% American-made upper boasts dual-side ejection ports with an off-side cover and interchangeable grip and off-hand slide handles making it completely customizable to your comfort as a right or left-handed shooter. - Our proprietary carrier introduces a new charging method that puts the force lower on the axis for smoother more linear operation. The non-reciprocating charging handle is releaseably locked forward with another innovative new feature to prevent movement during operation. Finally the look of the 6061 billet cut SCU has been reborn into a tough streamlined more aggressive form.