Sons of Liberty Gun Works M4-L89 Upper Receiver Group 16" 5.56 NATO A2 Flash Hider U-M4L89-556-16-A2

SKU: FLX-SOLGWU-M4L89-556-16-A2

Regular price $1,027.98
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Sons of Liberty Gun Works M4-L89 Upper Receiver Group 16" 5.56 NATO A2

The Sons of Liberty Gun Works (SOLGW) M4-L89 Upper Receiver Group delivers professional-grade performance for AR-15 builds, competitions, and defensive applications. This mil-spec upper is built around a 16-inch Liberty Fighting Barrel chambered in 5.56 NATO, paired with a 15-inch L89 7-sided M-LOK handguard for a versatile and lightweight platform. The Drivelock Barrel Nut System ensures a rock-solid rail interface, while the forged upper receiver provides outstanding durability and compatibility with mil-spec components. Finished in a matte black, this URG ships ready to pair with your preferred lower and BCG. Note: does not include a bolt carrier group or charging handle.

Product Highlights

  • 16" 5.56 NATO Liberty Fighting Barrel with mid-length gas system for reliable cycling and a smooth, balanced recoil impulse
  • 15" L89 7-Sided M-LOK Handguard featuring the Drivelock Barrel Nut System and titanium barrel nut for maximum rail stability under hard use
  • A2 Flash Hider for effective muzzle flash suppression in low-light and tactical environments
  • Integral QD Sling Attachment Points at the barrel nut on both sides for flexible sling mounting options
  • Forged Mil-Spec Upper Receiver compatible with standard AR-15 components; matte black finish for a durable, corrosion-resistant surface

Specs

  • Brand: Sons of Liberty Gun Works
  • MPN: U-M4L89-556-16-A2
  • UPC: 657628673057
  • Caliber: 5.56 NATO
  • Barrel Length: 16"
  • Gas System: Mid-Length
  • Handguard: 15" L89 7-Sided M-LOK Rail
  • Barrel Nut: Drivelock System with Titanium Barrel Nut
  • Muzzle Device: A2 Flash Hider
  • Upper Receiver: Forged Mil-Spec
  • Finish: Matte Black
  • Platform: AR-15
  • Includes: Upper Receiver Group with 15" L89 Rail
  • Does Not Include: Bolt Carrier Group or Charging Handle
  • QD Attachment: Integral QD's at Barrel Nut, Both Sides

Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.

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