** The Aero Precision M4A1 lower receiver pictured is California legal as is and does not require CA compliant parts or modification. CA compliant parts are buyer's responsibility when built into rifle. **
The M4A1 Clone Lower Receiver features custom engraving on the AR15 Gen 2 Lower Receiver and is the perfect base for your M4A1 clone build.
- Custom Aero Precision logo
- Markings include: Property of U.S.A., MOD M4 CARBINE, CAL. 5.56MM
- Serial number designation
- Safe/Semi/Auto safety selector markings
