The Tiger Rock Inc. GB875 Low Profile Steel Gas Block offers exceptional performance for AR-15 enthusiasts. Engineered to fit .875 diameter barrels, this compact gas block seamlessly integrates with nearly any quad rail system. Constructed from durable hardened steel, it ensures reliability under various shooting conditions. Its non-reflective matte black finish not only enhances aesthetics but also minimizes glare, making it a tactical choice for serious shooters. The kit includes roll pins, two set screws, and an allen wrench for straightforward installation. Mil-Spec dimensions .875 diameter Hardened Steel construction Non-reflective Matte Black finish Includes roll pin, 2 set screws, and allen wrench Note: Not designed for bull barrel mounts Fits: AR .875" barrels Enhance your firearm's setup with the reliability of the Tiger Rock gas block.