Crafted from 416R stainless steel, known for its superior strength and corrosion resistance, ensuring long-lasting performance in any environment. Features advanced 3-groove polygonal rifling to enhance bullet stability and accuracy, providing a smoother and more consistent shooting experience. Precise 1:9.73 inches twist rate optimized for a wide range of bullet weights, offering exceptional versatility for various shooting applications. Meticulously dimpled for secure and reliable gas block installation, ensuring optimal gas flow and system reliability. Engineered to elevate shooting precision and reliability, ideal for both competitive shooters and hunting enthusiasts. Muzzle threads with a 5/8-24 specification 18 inches lengths for MK10 large frame Precision requirements