Receivers / Flats / Uppers

Receivers / Flats / Uppers

Explore our premier selection of HK receivers, flats, and uppers at HKParts, perfect for building or upgrading your Heckler & Koch firearms. Our products feature precision-engineered MP5 receiver flats, HK 416 complete upper assemblies, and a wide range of custom options designed for tactical and precision shooting. Whether you are customizing an MP5, upgrading an HK416, or constructing a new firearm, our high-quality components provide unparalleled reliability and performance.

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  • Used - H&K 416 10.4" Date Coded OTB Upper Receiver Kit - USED - HKP-22193-M HK416 Upper Receiver Kit - 10.4" - Date Coded - OTB - USED
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    HK416 Upper Receiver Kit - 10.4" - Date Coded - OTB - USED

    H&K Heckler & Koch

    $3,789.95
    H&K 416 10.4" Date Coded OTB Upper Parts Kit - USED Genuine HK 416 10.4″ date coded used upper parts kit with a factory German 10.4″ barrel with the new Over The Beach (OTB) features (vented gas block, quad rail forearm).  Finish...
    $3,789.95
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