The RADICAL UPPR 556 16" 1-7 MLOK BLK from Radical Firearms delivers a complete upper assembly engineered for versatile performance in a range of rifle builds, featuring a 16" barrel with a 1:7 twist for reliable stabilization of 5.56x45mm NATO ammunition. Crafted with a Black finish and M-LOK open-rail design, this upper provides flexible accessory mounting options for optics, grips, and hand stops, making it a solid platform for precision shooting, silhouette competition, or practical field use. Its complete upper receiver configuration simplifies setup, enabling straightforward pairing with compatible lowers to create a configured rifle that responds consistently under varied conditions. The 5.56 NATO chamber ensures compatibility with widely available ammunition, while the robust construction supports dependable cycling and accuracy in dynamic shooting scenarios. Whether updating an existing build or starting a fresh configuration, this Radical Firearms upper emphasizes durability, streamlined installation, and modularity, allowing shooters to tailor their setup to their preferred grip angle, optic choice, and accessory arrangement without sacrificing reliability or consistency in the field or at the range.