Aero Precision APAR600134: 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 SBA3 Stabilizing Brace.
Includes:
- M4E1 Lower Receiver
- A2 Grip
- SBA3 Brace
- Lower Parts Kit
- Carbine Receiver Extension
- AR15 Carbine Buffer and Spring
- These parts are installed