Product DescriptionThe Aero Precision M4E1 Pro Lower Receiver is a stripped AR-15 lower built for shooters and builders who want seamless ambidextrous operation and broad component compatibility. Designed around the M4E1 platform, this serialized lower receiver integrates mirrored controls that allow easier manipulation of the bolt catch, magazine release, and safety without changing your dominant firing hand. Finished in Olive Drab Green anodizing, it is compatible with standard AR-15 components and magazines, giving builders the flexibility to configure their rifle to their preferred setup. Proprietary lower components come preinstalled, and the receiver includes the bolt catch assembly and magazine release assembly for added convenience.Product Highlights Fully ambidextrous M4E1 Pro lower receiver designed for intuitive control of the bolt catch, magazine release, and safety. Compatible with standard AR-15 components and magazines for flexible rifle builds and upgrades. Olive Drab Green anodized finish delivers a distinctive look with durable surface protection. Stripped lower receiver format gives builders a strong starting point while including key preinstalled proprietary components. Includes bolt catch assembly and magazine release assembly to simplify the build process. Specs Product Type: Lower Receiver Model: M4E1 Pro Receiver Style: Stripped Platform: AR-15 Compatibility: Standard AR-15 components and magazines Operation: Ambidextrous controls Material: 7075-T6 aluminum forging Color: Olive Drab Green Finish: Anodized Markings: Cal Multi Included Components: Bolt Catch Assembly, Magazine Release Assembly Country of Manufacture: USA UPC: 840014623259 MPN: APAR600031AC Brand: Aero Precision Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.