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    • Colt M4 Carbine 5.56mm Semi-Auto Lower Receiver Assembly
  • Colt M4 Carbine Lower Receiver Assembly
  • Colt M4 Carbine Lower Receiver Assembly

    Colt M4 Carbine 5.56mm Semi-Auto Lower Receiver Assembly

    Colt

    MSRP:
    Price: $650.00
    SALE: $420.00
    (You save )
    (1 review) Write a Review
    SKU:
    403992

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    Product Description

    Factory Colt complete lower receiver assembly to build your AR15, M16 or M4. Compatible with all mil-spec AR15/M4/M16 upper receivers. Manufactured to truly meet and exceed all Mil Spec standards. Marked with highly desirable "M4 Carbine" markings.

    This item is a serialized part, considered a firearm and requires transfer through a FFL

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    Colt M4 Carbine Lower Receiver Assembly
    Colt
    Colt M4 Carbine 5.56mm Semi-Auto Lower Receiver Assembly

    1 Review Hide Reviews Show Reviews

    • 4
      Not suitable for SS or FRT

      Posted by Naji on 9th Jan 2026

      AU shipped and packed this lower perfectly. The quality is typical Colt. My only complaint with this lower is it has a denial block in the trigger pocket. If you plan to use an SS or FRT trigger pack this lower will NOT work without modification. AU should really put that in the description. It may be common knowledge with Colt users but I was not aware until after i purchased it.

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