The Luth-Ar LLC Adjustable Gas Block is designed for the AR-15 platform featuring a precise inside diameter of .750 inches. Crafted from durable steel this gas block ensures optimal performance and reliability. Its adjustable nature allows for fine-tuning of the gas system enhancing the firearm's efficiency and adaptability to various ammunition types and shooting conditions. Ideal for enthusiasts seeking improved accuracy and control this gas block is a must-have upgrade for any AR-15 build.