0 Cart
Added to Cart
    You have items in your cart
    You have 1 item in your cart
    Check Out Continue Shopping


    Complete 300 AAC BLACKOUT™ Upper Receiver Assembly
    - 12.5" Nitrided and Hand Lapped 1:7" Twist Barrel, threaded 5/8-24
    - 51T BLACKOUT™ Flash Hider
    - "Full Auto" NiB Bolt Carrier Group
    - KAC URX 3.1 Rail
    - Ready to drop onto your AR15/M16/M4 lower! Works with an AR lower with "Mil-Spec" push pin locations.

    -12.5" AAC 300BLK Upper is designed for use with a carbine receiver extension, standard GI Buffer Spring, and an H2 Buffer.

    *With barrels shorter than 16", all NFA rules apply!
    Specifications subject to change.