The Sons of Liberty Gun Works Broadsword-89 Upper (SOLGW part no. BROADSWORDUPPER-89-16-6MAX-NOX) is a fully assembled AR-pattern upper chambered in 6mm Max, built around a 16-inch barrel with a 1-in-7.5 twist rate to stabilize longer, heavier-for-caliber bullets. A 15-inch M89 free-float rail wraps the barrel for mounting optics, lights, and accessories, and the whole upper is finished in SOLGW’s NOX coating for a durable, low-glare surface.

Key Specifications

• chambered in 6mm Max a long-range-oriented AR-15 cartridge option.
• 16-inch barrel clears the federal rifle minimum with no NFA paperwork required.
• 1-in-7.5 twist rate matched to stabilize the longer, heavier bullets this cartridge is built around.
• 15-inch M89 free-float rail gives full-length mounting space for optics, lights, and accessories.
• sold as a fully assembled upper ready to drop onto a compatible AR-15 lower.
• NOX finish SOLGW’s durable, low-glare coating over the upper’s components.

Frequently Asked Questions

Is a lower receiver included? No, this is the upper receiver group only; it is built to drop onto a compatible AR-15 lower.

Does the barrel length require any special paperwork? No, at 16 inches this barrel clears the federal rifle minimum with no NFA concern.

What twist rate does this upper use? It uses a 1-in-7.5 twist, matched to stabilize the cartridge’s longer, heavier bullets.

Buy the SOLGW Broadsword-89 Upper

Drop a complete, long-range-ready 6mm Max upper onto your AR-15 lower without sourcing a barrel and rail separately. Browse more of our AR15 uppers selection and order from our Lubbock, Texas gun shop.