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  • 604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete
  • 604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete
  • 604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete
  • 604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete

    • 604 A1 M4 Ramped Slab (Slick) Side Upper Receiver Complete

    TNTE Custom

    $214.99
    (2 reviews) Write a Review
    SKU:
    UP-604-C-M4
    Shipping:
    Calculated at Checkout
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    Product Description

    Forged M16 Upper Receiver from USGI Contractor, Model 604 "Slick Side", Black Type 3 Hard coat Mil Spec Anodized, 7075 T6 Aluminum, M4 Feed Ramps, Assembled with new production rear sight.

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    • 5
      604 A1

      Posted by Steven V on 26th Aug 2024

      This is my first retro build so far upper looks fine can’t wait to build

    • 5
      Nice

      Posted by Darin on 26th Mar 2024

      My first a1 slickside. I appreciate the m4 feed ramps. Made a nice Frankenstein build that I am sure to enjoy. Thanks for making this product available so I could build an a1 (even if not historically accurate)

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