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Heckler & Koch MR556 UPPER REC KIT

Heckler & Koch 235975A5 Uppers Zoom

Please note: Many of our pictures are stock photos provided to us by the manufacturer and may not accurately represent the actual item. Please review the Full Description and Specifications before ordering.

Model #: 235975A5

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HK MR 556 AR-15 Complete Piston Upper 223 Rem/5.56 NATO 16" Black
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Full Description


    This kit has been designed and manufactured to HK's exacting standards of excellence and is intended for use in, and with, Mil-Std buffer tubes, as are provided with the HK MR556A1 rifle. Due to the precise nature of the components of this kit, they must be installed as a complete kit to ensure proper operation. The MR556A1 Upper Receiver Kit (URK) consists of an MR556A1 upper receiver/barrel assembly, complete bolt mechanism, and buffer and action (recoil) spring. The MR556A1 Upper Receiver Kit is designed to be fully interchangeable with most high quality AR-style firearms. MR556A1 upper receiver kits can be used to retrofit many non-HK AR systems by replacing the aforementioned components with MR556A1 URK components.
    TypeComplete Piston Operated
    Caliber223 Remington/5.56 NATO
    SightsNone, Optic Ready
    Barrel Length16"
    Barrel Material4140 Steel
    Barrel DescriptionHammer Forged
    Barrel FinishBlack
    Receiver DescriptionA3
    Receiver FinishBlack
    HandguardsQuad Rail
    Handguard FinishBlack
    Product ModelMR556

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