The Aero Precision Pro Lower Receiver M4E1 is a stripped, semi-complete lower receiver designed for compatibility with AR15 components and magazines. This model features ambidextrous controls that allow the shooter to operate the bolt catch, magazine release, and safety without modifying their dominant firing hand.Key FeaturesAmbidextrous Controls: Integrated controls facilitate easy operation for both left- and right-handed shooters.Style: This lower receiver is styled as stripped, allowing for customization with various components.Color: Finished in O.D. Green for a distinctive look.