Out of stock
SKU: CMMG35B5FBC-AB
UPC: 810097502635
The CMMG Upper Receiver Set Mk4 350 Legend 16.1" Black is a complete upper assembly purpose-built for the 350 Legend intermediate cartridge. This rifle upper delivers the terminal ballistics and intermediate-range capability of a modern rifle platform in a compact, ergonomic configuration. The 16.1-inch barrel balances velocity retention with maneuverability—ideal for hunters, sport shooters, and tactical operators working within typical engagement distances where 350 Legend excels.
The 350 Legend cartridge represents a distinct niche in modern rifle ammunition: it delivers rifle-class performance with notably reduced recoil and report compared to standard rifle calibers, while offering superior range and energy over handgun platforms. The 16.1-inch barrel is optimized for this cartridge's ballistic profile, providing consistent velocity development and accuracy. CMMG's Mk4 upper receiver set integrates the barrel, bolt carrier group, and charging handle into a single assembly, simplifying the build or upgrade process for users working with AR-15 lower receivers. The black finish provides a professional, corrosion-resistant appearance suitable for duty or field applications.
This upper assembly targets shooters seeking a shorter-range rifle platform with reduced noise signature and recoil impulse. Hunters favor the 350 Legend for whitetail and medium game where its energy and trajectory suit typical woodland distances. Sport shooters and tactical trainees benefit from lower recoil for faster follow-up shots and extended range work. The compact barrel length keeps the overall platform maneuverable in vehicles, tight spaces, or hunting situations where full-length rifle barrels become cumbersome. Users pairing this upper with a standard AR-15 lower receiver gain a complete, functional rifle platform ready for the range or field.
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