LMT M4 Flattop AR-15 Upper Receiver Assembly


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SKUL7D1A Category

This Lewis Machine & Tool M4 style flat top upper receiver comes from the factory with forward assist and dust cover already installed. This forged AR-15 upper receiver is compatible with Mil-Spec parts and lowers. The flat top Picatinny rail features laser engraved T-marks to make it easier to put your optic back on in the same spot if you ever take it off. Hardcoat anodized black to military specifications, this LMT Upper Receiver is a reliable foundation for building a high-quality AR.


  • Forged from aluminum
  • Hardcoat anodized
  • T-marked picatinny rail
  • Includes forward assist and dust cover assembly
  • Compatible with Mil-Spec AR-15 lowers and parts

Lewis Machine and Tool Company has provided US Military, law enforcement, and government agencies with high-quality weapon systems since 1980. LMT is dedicated to providing that same level of precision engineering to civilians and is expanding into foreign military services. All LMT Defense products are 100% made in America and are a qualified 2005 GSA supplier. Lewis Machine & Tool has also won many awards for their quality engineering and excellence in business.


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