This upper receiver assembly is crafted from high-strength 7075-T6 aluminum, which is then treated with a Type III Hardcoat Anodized finish for durability. It adheres to rigorous military standards and features a sleek side profile. Designed to accommodate 9mm, .40, and .22LR calibers, the assembly includes an ejection port door tailored to these sizes. Note that it lacks a forward assist feature.
Please be aware that this upper receiver is specifically designed for use with 9MM, .22LR, and select pistol calibers up to .40, ensuring compatibility only with these rounds.
