Precision machined from forged 7075 T6 aluminum, the CMMG Mk4 AR-15 stripped lower receiver is the quality mil-spec lower ready to be the foundation for your next build. The Mk4 stripped lower comes standard in a Armor Black finish and can be assembled using any mil-spec Lower Parts Kit.
Features :
Features :
- 7075 T6 Aluminum
- Cerakoted Armor black
- 223 Remington/5.56 NATO
