Aero Precision M4E1 Complete Lower Receiver with Magpul SL-K Stock, FDE - APAR600184

The Aero Precision M4E1 Complete Lower Receiver is a drop-in component for AR15/M4 builds, featuring a Magpul SL-K Carbine Stock compatible with mil-spec carbine buffer tubes. This complete lower receiver serves as the serialized foundation for custom AR platform rifles and includes all necessary internal components for assembly.