Upgrade your rifle build with the M4E1 PRO Lower Receiver — a precision-built ambidextrous lower designed for speed and ergonomics. Integrated left- and right-side bolt catch, magazine release, and safety give you instant control without sacrificing your firing grip. Ideal for competitive shooters, law enforcement, and tactical builds seeking faster transitions and smarter handling.
Includes:
M4E1 PRO Stripped Lower Receiver - Anodized Black
Ambidextrous Bolt Catch Assembly - Installed
Ambidextrous Magazine Release Assembly - Installed
