The Sons of Liberty Gun Works M4-L89 Upper Receiver Group 5.56mm (.223) is a part. It fits AR-15 and comes in matte black.
Key features
- 5.56 Nato
- 14.5" barrel
- Includes 13.75" L89 rail
- Does Not Include BCG or Charging Handle
Sons of Liberty Gun Works M4-L89 Upper Receiver Group 5.56mm (.223)
- Manufacturer
- Sons of Liberty Gun Works
- Model
- M4-L89 Upper Receiver Group
- Caliber / gauge
- 5.56mm (.223)
- Barrel length
- 14.5"
- Finish
- Matte Black
- Item type
- Accessory
- Family
- Upper Receivers
- Features
- Upper Receiver; 5.56 NATO; 14.5" Barrel; Fits AR-15; Matte Finish; Black; Includes 13.75" L89 Rail; Does Not Include BCG or Charging Handle
- Manufacturer part #
- U-M4L89-556-145-NMD
- UPC
- 657628673040





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