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    DSG Complete 8" 5.56 Duty Series Upper w/ 7" BCM Alpha Keymod Rail

    Manufacturer: DSG Arms
    SKU: DSG-4303-0079
    Manufacturer part number: DSG-4303-0079
    Availability: In stock
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    Complete Upper Features:

    Upper is Mil-Spec upper receiver with M4 feed ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized. The barrel is 4150 chrome moly vanadium steel with 1:7 twist, 8″ with .556 chamber, button rifled, MP & HPI tested, pistol length gas system, Nickel Boron coated barrel extension, 11-degree target crown with A2 flash suppressor and crush washer. The barrel has been dimpled to ensure the gas block does not move.

    BCM Gunfighter Alpha Keymod Rail is manufactured from 100% aluminum, it is lightweight yet durable. It also features a proprietary patent-pending mounting, indexing and lock up system that mitigates 1200 rail movement under heat generated from the barrel nut. The KMR Alpha is hardcoat anodized for corrosion resistance as well as to maintain a non-reflective finish. The BCM KMR Alpha also allows for a larger range of modularity offering 4 different offset mounting positions between traditional 3,6,9, and 1200 positions. One polymer Keymod rail and one Keymod QD push button adapter are also included.

    Barrel Features:

    • 5.56mm Chamber
    • 4150 Chrome Moly Vanadium steel
    • QPQ Coated Barrel
    • Nickel Boron coated barrel extension
    • M4 feed ramps
    • 1:7 twist rate
    • 1/2x28 muzzle threads
    • HP & MPI tested
    • .750” gas block seat
    • Weight: 1.10
    • Profile: Heavy
    • 11 Degree Recessed Target Crown
    • Button Rifled
    • Pistol-length gas system


    DSG Complete Duty Series Uppers are assembled and test fired by DSG armorers. Ready for field use*.

    More on DSG Complete Upper Assembly Process and Verification process are available in the Blog section of our website.

    *We Recommend DSG Standard and Enhanced Bolt Carrier Groups for guaranteed trouble-free and reliable performance. Charging handles come in many variations and all quality makes and models should work fine with our complete uppers.

    Note: Does NOT include a bolt carrier group and charging handle.