The Angstadt Arms Complete 9mm Upper Assembly is a 9mm Luger upper built for the AR-15 platform. It weighs 2.6 lbs and uses 7075-T6 aluminum construction. The free-float handguard prevents contact between barrel and handguard during firing, which helps consistency. A pistol-length gas system reduces recoil and keeps follow-up shots manageable. The M-Lok rail accepts lights, grips, and other accessories without adding bulk. Finish is nitride-coated black.