The Anderson "No Logo" aka "Ghost" Stripped Lower Receiver may be the best bang for the buck lower receiver for your next custom build. Anderson is widely known for their quality machining and affordability and now you can get all that value in a discrete package. Machined from 7075-T6 aluminum forgings this Lower is quality checked at every step of the way to ensure all critical dimensions are within tolerance. This means you can be confident that the lower will be compatible with any other mil-spec components. The Anderson Lower is then finished with a mil-spec Type 3 hard coat anodizing.Specifications: Features: Mil Spec, Multi-Cal Engraved, Semi-Auto, No Logo Material: 7075 T6 Aluminum Forging Finish: Type 3 Hard Anodized, Black Compatibility: All AR15 Calibers Additional Notes: Accepts 3/4" and 1" Grip Screws