The Sons of Liberty Gun Works (SOLGW) Broadsword-89 Upper Receiver Group is a high-rigidity, precision-oriented barreled upper assembly built for shooters demanding match-grade accuracy in an AR-15 platform. The Broadsword-89 billet upper receiver is significantly reinforced along its entire profile to minimize flex and harmonic interference between the barrel, handguard, and optic system. The extended barrel nut, Drivelock tensioning crossbolts, and keyed upper receiver face - combined with the L89 rail's anti-rotation tabs and stainless steel center index dowel - work together to create one of the most rigid two-piece AR-15 upper constructions on the market. This configuration allows virtually any lower receiver to achieve match-grade rifle performance.
Equipped with a 14.5-inch Precision SPR 416R stainless steel barrel chambered in .223 Wylde, this upper accepts both 5.56 NATO and .223 Remington ammunition. The included HUXWRX flash hider is permanently pinned and welded, bringing the overall barrel length to a compliant 16 inches, eliminating the need for NFA registration. The assembly is topped with a 13.75-inch L89 Drivelock handguard featuring a titanium barrel nut and a three-point locking interface for an exceptionally stiff and stable platform. Note: Does not include a Bolt Carrier Group (BCG) or charging handle.
Product Highlights
- Match-Grade Precision Barrel: 14.5-inch 416R stainless steel Precision SPR barrel chambered in .223 Wylde for compatibility with both 5.56 NATO and .223 Remington ammunition.
- Pinned and Welded HUXWRX Flash Hider: Permanently installed flash hider with 5/8x24 threads achieves a 16-inch overall barrel length, keeping the rifle NFA-compliant and compatible with HUXWRX suppressors.
- L89 Drivelock Handguard: 13.75-inch L89 rail uses a titanium barrel nut and three-point locking interface for maximum rigidity and minimal point-of-impact shift under sustained fire.
- Broadsword-89 Billet Upper Receiver: Fully reinforced billet construction with anti-rotation tabs and a stainless steel center index dowel for a rigid, accurate barrel-to-handguard interface.
- NFA-Compliant and Ready to Run: Fits standard AR-15 lower receivers and arrives in a matte black finish - ready for a BCG and charging handle to complete the build.
Specs
- Brand: Sons of Liberty Gun Works
- Model: Broadsword-89 (BS L89) Upper Receiver Group
- Manufacturer Part Number (MPN): U-BS-L89-556-145-HUX
- UPC: 657628672838
- Caliber / Chamber: .223 Wylde (accepts 5.56 NATO and .223 Remington)
- Barrel Length: 14.5 inches
- Overall Barrel Length (Pinned and Welded): 16 inches
- Barrel Material: 416R Stainless Steel
- Barrel Profile: Precision SPR
- Muzzle Thread Pitch: 5/8x24
- Muzzle Device: HUXWRX Flash Hider (Pinned and Welded), Compatible with HUXWRX Suppressors
- Handguard: 13.75-inch L89 Drivelock Rail
- Handguard Attachment: Titanium Barrel Nut, Three-Point Drivelock Interface
- Upper Receiver: Broadsword-89 Billet
- Finish: Matte Black
- Platform Compatibility: AR-15
- Includes: Barreled Upper Assembly with Handguard and Flash Hider
- Does Not Include: Bolt Carrier Group (BCG) or Charging Handle
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