G1-556 Lower Receiver

ACR 5.56 lower receiver made of 6061 Aluminum. Features a milspec 5.56 flared magwell. Allows for most AR-15 Trigger guards and pistol grips to be used with the ACR.

Uses all factory parts for assembly with the exception of the trigger box.  Required trigger box included.

**Requires new style safety core which came with the final generation ACR’s. These safeties feature a metal core and levers that bolt in from the sides. Can be purchased separately.**

• Available in Black or Coyote cerakote.
• Includes lightweight trigger box