All new Generation 3 Hera Commercial Upper without Forward Assist designed to keep the MIL-SPEC fit with a modern design. Manufactured on the latest CNC Milling Machines and afterwards hardcoated. The HCU GEN.3 is compatible with most Mil-Spec Parts and a perfect base for a custom build. Using high quality 7075-T6 Aluminium makes the HUS upper receiver a more rigid platform an a perfct base for AR-15 builds. The HCU Gen 3. All Gen.3 commes with a pre-installed Dust-Cover.