Primary Weapons M116Ua0b Mk1 Upper 223 Wylde 16.1 Chrome Lined Barrel 7075 Ar15

The Primary Weapons Systems M116UA0B MK1 Mod 1-M Upper brings a precision-focused upgrade to AR-15 platforms with a 16.10-inch chrome-lined 4140 steel barrel chambered in 223 Wylde, delivering reliable stabilization for both 5.56x45mm and .223 remington cycling. This complete upper features a 7075-T6 anodized aluminum receiver for enduring strength and rigidity, paired with a 15.05-inch M-LOK handguard finished in black to provide flexible accessory mounting without adding bulk. The barrel's 1:8 twist supports a wide range of bullet weights, while the chrome lining enhances corrosion resistance and extends service life under demanding field or range conditions. A removable muzzle device offers practical suppression or flash mitigation options, and flip-up front and rear sights integrate quickly for dependable aiming when optics aren't in use. Designed for AR-15 compatibility, this upper is optimized for seamless installation and consistent, repeatable performance in rifle parts applications, from tactical ranges to training environments. The combination of a durable black anodized finish, precision machining, and versatile features makes the M116UA0B MK1 Mod 1-M Upper a reliable platform for builders seeking a robust, ready-to-fire upper that delivers accuracy, adaptability, and ease of integration into existing configurations.