This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.
Sons of Liberty Gun Works
M4-L89 Upper Receiver Group
Sons of Liberty Gun Works M4-L89 Upper Receiver Group, Upper Receiver, 5.56 NATO, 12.5" Barrel, Fits AR-15, A2 Flash Hider, Matte Finish, Black, Includes 11.75" L89 Rail, Does Not Include BCG or Charging Handle U-M4L89-556-125-A2
Key Details
Live Distributor Check
Purchase Requirements
- California compliance or distributor restriction review may apply.
- Final availability is confirmed against the distributor during cart and checkout.
Product Description
Sons of Liberty Gun Works is a manufacturer of quality firearms and parts, perfect for your next build, next competition, or next line of defense. Their small parts fit most mil-spec firearms. These uppers are built with L89 7-sided rails, forged uppers, and Liberty Fighting Barrels. There are multiple options of lengths and muzzle devices.
Features
- 12.5 5.56 NATO Barrel"
- 11.75 L89 Handguard"
- A2 Flash Hider
- 7-Sided M-LOK Slots
- Integral QD's at Barrel Nut on Both Sides
- Drivelock Barrel Nut System