Black Rain Ordnance's V-block is expertly CNC-machined from 1018 steel, ensuring durability and precision in construction. The V-block is then nitride coated and case hardened for enhanced resistance to wear and corrosion. Each V-block kit includes the premium V-block itself, along with two retaining screws and one takedown screw, providing everything you need for a reliable and secure assembly. Upgrade your firearm with this high-quality V-block kit, designed for performance and longevity.