Dark mode is

Product Unavailable

Unfortunately, the following product is currently unavailable through Rainier Arms.

Aero Precision M4E1 Complete Lower Receiver w/ MOE Grip & SBM4 Brace - Black/FDE

AR-15 Complete Lower Receiver


The Aero Precision M4E1 Complete Lower Receiver with SB Tactical Stabilizing Brace is the perfect starting place for your AR pistol build. This complete lower features an M4E1 Lower and is upgraded to include an SB Tactical SBM4 Stabilizing Brace.



  • M4E1 Lower Receiver
  • MOE Grip (FDE)
  • SBM4 Brace (FDE)
  • Lower Parts Kit
  • Carbine Receiver Extension
  • AR15 Carbine Buffer and Spring
  • These parts are installed
More Information
SKU APAR600144
Product Type AR-15 Complete Lower Receiver
Manufacturer Aero Precision
Option AR-15
Google Customer Reviews Google Customer Reviews