The TacFire UP01C Stripped Upper Receiver in 5.56x45mm NATO brings precision and durability to your AR-15 build, crafted from 7075-T6 aluminum with a robust black anodized finish for reliable performance under demanding field and range conditions. Designed as a stripped upper, it provides a clean foundation for assembling your upper receiver group, while its optic-ready compatibility and absence of built-in sights offer flexibility for modern aiming solutions. The 5.56 NATO chambering ensures compatibility with a wide range of factory and reloadable ammunition, and the precision-machined receiver surface supports consistent fitment with compatible barrels, handguards, and components. The handguard interface features a durable Black Hard Coat Anodized finish that withstands heat and daily handling, making it suitable for hard-use rifle builds. With no firearm included, this component is ideal for enthusiasts pursuing a custom AR-15 platform tailored to their preferred optics, accessories, and tactical or competition configurations. TacFires UP01C combines solid metallurgy, thoughtful finishes, and a streamlined form to help you complete a reliable, high-performance upper assembly designed for accurate, modular shooting.