This LODO 300 AAC Upper Assembly comes ready to fire right out of the box upon installation onto any standard AR-15 lower receiver. Our LODO upper receiver group is assembled from premium components into a high performance-package.The upper assembly comes equipped with a 4150 chrome moly steel barrel.

8.5" 300 AAC Blackout Hera Upper Receiver

  • Upper Receiver: A3 Flat-Top, Forged 7075-T6 Aluminum

    Barrel Length: 8.5″

    Barrel Contour: M4

    Barrel Material: 4150 Chrome Moly Steel

    Muzzle Thread Pattern: 1/2 x 28

    Chrome Lined: No

    Barrel Finish: Nitride

    Twist Rate: 1 in 8″

    Chamber: 300 AAC

    M4 Feed Ramps: Yes

    Muzzle Device: A2

    Gas System Length: Pistol

    Gas Block Diameter: 0.750″

    Handguard: Quad Rail, 7″ Hera Arms Free Float

    Bolt Carrier Assembly Included: No

    Charging Handle: No

    Weight 3 lbs.