ATI ATIHUP200 Omni Hybrid Multi-Caliber Polymer Black Receiver for AR-15
The Omni Hybrid fully-patented metal reinforced polymer upper receiver accepts standard mil-spec parts. It is lightweight with the durability of a forged aluminum upper. *Note- Requires dust cover, forward assist, charging handle, barrel, handguard, gas block, muzzle device, gas tube and BCG (Bolt Carrier Group) to complete.