Sons Of Liberty Gun Works Broadsword-89 6Mm Max 18'' Bbl 16.75'' M89 Rail W/Nox

The Sons of Liberty Gun Works Broadsword-89 upper receiver is a precision-engineered upper half designed for shooters who demand rock-solid lockup and minimal point-of-impact shift under aggressive field conditions. Chambered in 6mm Max with an 18-inch barrel and topped with a 16.75-inch M89 rail system and NOX muzzle device, this upper delivers the accuracy and durability you need for long-range hunting, precision rifle competition, or demanding range work. Built on the proven Broadsword platform, the -89 iteration takes handguard integration to the next level—purpose-designed for seamless M89/L89 handguard compatibility and engineered to eliminate the flex that can throw your zero.

What sets the Broadsword-89 apart is its reinforced construction. The upper receiver profile is stiffened throughout to lock down the barrel-to-optics interface, a critical detail for shooters running heavy loads, prone supports, or barricade positions. SOLGW's testing shows this design minimizes POI shift even under extreme bipod and barricade pressure—a real advantage when precision matters. The forward-shifted forward assist also gives you extra clearance for left-hand charging handle manipulation, a thoughtful detail that improves ergonomics without compromise.

The 6mm Max cartridge delivers flat trajectory and velocity in a modern, efficient package, making it a solid choice for mid-to-extended-range work. Paired with a precision SOLGW barrel and the rock-solid M89 rail system, this upper receiver gives you the foundation for a rifle that holds zero and performs when it counts. Whether you're building a long-range hunting rig or a match-grade precision platform, the Broadsword-89 handles both with authority.

Key Features

• Reinforced upper receiver profile for maximum barrel and optics stability
• M89 handguard relief cuts for seamless, stout lockup with M89/L89 handguards
• Engineered to reduce POI shift under bipod and barricade loading
• Forward-shifted forward assist for improved left-hand charging clearance
• 6mm Max chambering for efficient, flat-shooting performance
• 18-inch precision barrel with 16.75-inch M89 rail system
• Includes NOX muzzle device

Specifications

Frequently Asked Questions

What handguards are compatible with the Broadsword-89 upper receiver?

The Broadsword-89 is designed with relief cuts that integrate seamlessly with M89 and L89 handguards, providing a stout, secure lockup with minimal flex.

Will this upper receiver work for long-range hunting?

Yes. The reinforced receiver design, precision barrel, and 6mm Max chambering make this upper well-suited for long-range hunting applications. The reduced POI shift under load is a significant advantage for field shooting.

What comes included with this upper?

This upper receiver comes with the 18-inch barrel, 16.75-inch M89 rail system, and NOX muzzle device as described. It is a complete upper half assembly.

Is the forward assist designed for left-handed shooters?

The forward assist has been shifted forward compared to standard receivers to provide added clearance for left-handed manipulation of the charging handle, making it more ergonomic for southpaws.