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M4 Knights RAS Rail 14.5″ Barrel BCG Kit

Original price was: $999.00.Current price is: $750.99.


COLT M4A1 SOPMOD Upper Receiver M4 Knights RAS Rail 14.5″ Barrel BCG Kit

The Colt M4A1 SOPMOD Upper Receiver is a high-performance component that is highly regarded in both military and civilian shooting communities. Known for its reliability, durability, and tactical versatility, this upper receiver comes equipped with the M4 Knights RAS Rail and a 14.5″ barrel, making it a formidable piece of equipment for various applications. In this blog post, we will delve into the features, benefits, and practical applications of the Colt M4A1 SOPMOD Upper Receiver with the M4 Knights RAS Rail and 14.5″ barrel, as well as the included Bolt Carrier Group (BCG) kit.

The Legacy of the Colt M4A1 SOPMOD

The M4A1, a variant of the widely used M4 carbine, has been a staple of the U.S. military since its introduction. The SOPMOD (Special Operations Peculiar Modification) program was developed to enhance the M4A1 with modular accessories and upgrades tailored for special operations forces. The result is a highly adaptable and effective weapon system that excels in various combat environments.

Key Features of the Colt M4A1 SOPMOD Upper Receiver

  1. M4 Knights RAS Rail:
    • Modular Design: The Rail Adapter System (RAS) from Knights Armament Company provides a robust and versatile platform for mounting various accessories such as optics, lasers, lights, and foregrips. This modularity allows users to customize their setup based on mission requirements.
    • Durability: Constructed from high-quality materials, the RAS rail is built to withstand the rigors of combat, ensuring reliable performance in harsh conditions.
  2. 14.5″ Barrel:
    • Optimal Length: The 14.5″ barrel balances maneuverability and ballistic performance. It offers improved accuracy and range compared to shorter barrels while remaining compact enough for close-quarters engagements.
    • Chrome Lining: The barrel is typically chrome-lined to enhance its durability and resistance to corrosion, ensuring a long service life and consistent performance.
  3. Bolt Carrier Group (BCG) Kit:
    • Reliability: The included BCG kit is designed to ensure reliable firearm cycling, with components crafted to meet or exceed military specifications.
    • Ease of Maintenance: The BCG kit is easy to disassemble and clean, making maintenance straightforward and ensuring the weapon remains operationally ready.

Practical Applications

  1. Tactical Operations:
    • The M4 Knights RAS Rail’s modularity and adaptability make the Colt M4A1 SOPMOD Upper Receiver ideal for tactical operations. Operators can configure their weapons with mission-specific accessories, enhancing their effectiveness in various scenarios.


The Colt M4A1 SOPMOD Upper Receiver with the M4 Knights RAS Rail, 14.5″ barrel, and BCG kit represents the pinnacle of modern firearm technology and design. Its durability, versatility, and performance make it an invaluable tool for military personnel, law enforcement officers, and civilian shooters. Whether you’re in the field, on the range, or protecting your home, this upper receiver offers the reliability and adaptability you need to succeed. Embrace the legacy and capability of the Colt M4A1 SOPMOD Upper Receiver and experience the difference it can make in your shooting endeavors.


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