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  • Product Details
    Machined 7075 T6 aluminum upper receiver with a 5" long flattop rail that accepts Weaver or Picatinny style rings and your tactical accessories.

    Finished with mil-spec, hard-coat, black anodizing for protection from scratches, mars, and abrasion, .250" (6.3mm) diameter pivot pin.

    This M4 model has the feed ramp cuts in it.

    We are unable to ship this item outside of the United States.

    If this item is purchased as part of an international order, the item will be removed from the order.

    The account will be refunded for the item, and the remainder of the order will ship.

    Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to
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    You're reviewing:AR Flat Top Upper Receiver M4 w/feed ramp cuts