The Sons of Liberty Gun Works Broadsword-89 upper receiver in 6mm ARC with an 18-inch barrel and 16.75-inch M89 rail delivers the rigidity and precision you need for consistent, repeatable accuracy. Built on the proven BROADSWORD platform and refined for even tighter handguard integration, the -89 spec raises the bar for upper receiver stiffness and POI stability under real-world shooting conditions—whether you're running aggressive bipod loads, barricade drills, or hunting in variable terrain.

What sets this upper apart is engineering that actually matters. The receiver features reinforced geometry along its entire profile to minimize flex where the barrel meets your optic, keeping shots where you aim them. Relief cuts machined into the upper face lock seamlessly with M89/L89 handguards, creating handguard lockup so solid that POI shift becomes a non-issue even under stress. You get the platform that SOLGW has stress-tested to eliminate fail-flex in ways standard forged receivers simply can't match.

Chambered in 6mm ARC, this is a purpose-built upper for precision work at intermediate ranges. Pair it with a SOLGW Precision Rifle Barrel for the accuracy the platform is designed around. The forward-shifted forward assist also gives lefty shooters clearance on the charging handle without sacrificing control. Built for shooters who demand more from their AR platform than off-the-shelf compromises.

The Sons of Liberty Gun Works Broadsword-89 upper receiver in 6mm ARC with an 18-inch barrel and 16.75-inch M89 rail delivers the rigidity and precision you need for consistent, repeatable accuracy. Built on the proven BROADSWORD platform and refined for even tighter handguard integration, the -89 spec raises the bar for upper receiver stiffness and POI stability under real-world shooting conditions—whether you're running aggressive bipod loads, barricade drills, or hunting in variable terrain.

What sets this upper apart is engineering that actually matters. The receiver features reinforced geometry along its entire profile to minimize flex where the barrel meets your optic, keeping shots where you aim them. Relief cuts machined into the upper face lock seamlessly with M89/L89 handguards, creating handguard lockup so solid that POI shift becomes a non-issue even under stress. You get the platform that SOLGW has stress-tested to eliminate fail-flex in ways standard forged receivers simply can't match.

Chambered in 6mm ARC, this is a purpose-built upper for precision work at intermediate ranges. Pair it with a SOLGW Precision Rifle Barrel for the accuracy the platform is designed around. The forward-shifted forward assist also gives lefty shooters clearance on the charging handle without sacrificing control. Built for shooters who demand more from their AR platform than off-the-shelf compromises.