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    DSG Complete 11.5" 5.56mm Duty Series Upper w/ 10" BCM M-LOK Rail - No BCG or CH

    Manufacturer: DSG Arms
    SKU: DSG-4303-0084
    Manufacturer part number: DSG-4303-0084
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    Order our lightweight and durable DSG complete duty grade upper receiver, designed for corrosion-resistant 7075-T6 aluminum with type III hard-coated anodized to prevent wear and tear and increase lifespan.

    Complete Upper Features

    Duty grade upper receiver with M4 feed ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized. Some of the notable barrel features include 5.56mm chamber, 4150 chrome moly vanadium steel, nickel boron coating on the barrel extension, and many more. We have given the barrel a government profile and have included an 11-degree recessed target crown to increase the performance and functionality of your weapon. The .750 gas block seat reduces overheating, prevents bending, and improves control of the weapon. Gas Port Hole: 0.073

    Our DSG complete 11.5” 5.56mm duty grade upper receiver is the all complete solution for your firearm. If you want an upper receiver, barrel, and barrel extension you can depend on, order our complete duty grade product today!


    BCM M-LOK Rail

    The MCMR Series of handguards gives the shooter modularity in the M-LOK® platform.

    • MCMR features M-LOK® Compatible mounting system.
    • Free Float Handguard eliminates loads from the barrel, reducing the deflection for more accurate shooting.
    • Precision Machined Aerospace 6061-T6 Aluminum Alloy, for high strength and lightweight.
    • Proprietary engineered profile offers additional cross-sectional strength.
    • Steel Barrel Nut same KMR, MCMR, and QRF series, to resist movement under heat.
    • Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
    • Handguard alone weighs 6.6 oz
    • Handguard mounting hardware 2.3 oz
    • 1.3” Inside Diameter
    • 1.5" Wide

    One nylon Picatinny rail section and one QD sling attachment is also included.

    Note: Nylon/Polymer Picatinny rail sections are for NON-load bearing accessories only grips, hand stops, light mounts. For load bearing accessories bipod mounts, sling mounts, vertical grips, barricade supports, we recommend aluminum Picatinny rail sections. Do NOT exceed 20 in/lbs. when securing fasteners on Polymer accessories. Aluminum Picatinny rail sections may be torqued to 30 in/lbs.

    Barrel Features

    • 5.56mm Chamber
    • 4150 Chrome Moly Vanadium steel
    • QPQ Coated Barrel
    • Nickel Boron coated barrel extension
    • M4 feed ramps
    • 17 twist rate
    • 1/2x28 muzzle threads
    • HP & MPI tested
    • .750” gas block seat
    • Weight 1.25 lb
    • Profile Government
    • 11 Degree Recessed Target Crown
    • Button Rifled
    • Carbine-length gas system
    • A2 Flash Hider with Crush washer


    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.

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