The Wilson Combat Forged AR-15 Upper is a stripped receiver upper compatible with .223 Remington and 5.56 NATO calibers. The upper features a durable anodized black finish, enhancing its resistance to corrosion and wear. This model is designed for assembly with various lower receivers, allowing for customization and versatility in your AR-15 build.Key FeaturesCaliber Compatibility: Supports .223 Rem/5.56 NATO cartridges.Finish: Anodized black finish for improved durability and corrosion resistance.Style: Stripped upper receiver, ready for customization.