AERO PRECISION M4E1 Lower Bolt Catch Pin

This threaded bolt catch roll pin is specifically engineered for use with the Aero Precision M4E1 Lower Receiver, providing a secure and convenient alternative to traditional roll pins. Perfect for replacing a lost or damaged pin, it ensures proper fit and reliable function within the M4E1 platform. Please note: this part is already included with every Aero Precision M4E1 Lower Receiver and does not need to be purchased separately unless a replacement is required. It is not compatible with Aero Precision M5 Lower Receivers or AR-15 Gen 2 Lower Receivers.