SOLGW M4L89BSUPPER-8.5-300 M4-L89 Broadsword .300BLK 8.5" Upper ReceiverThe SOLGW M4-L89 Broadsword .300 Blackout 8.5" Upper Receiver is a rugged, high-performance upper built for reliability and precision. SOLGW M4L89BSUPPER-8.5-300 features an 8.5" barrel chambered in .300 BLK, a durable 89 Series M-LOK rail, Drivelock tensioning, and anti-rotation tabs for rock-solid alignment. Designed for compact setups, it delivers match-grade accuracy and dependable function in a short-barrel platform. Sons of Liberty presents the Broadsword-89, one of the most robust and precision-engineered upper receivers on the market. Available in .223 Wylde, 5.56 NATO, and the flat-shooting 6mm MAX, the Sons of Liberty Broadsword-89 Upper Receiver offers a variety of barrel lengths to suit a wide range of shooting needs. Each upper is built around an extended barrel nut and features Drivelock tensioning crossbolts for unmatched stability. The included Sons of Liberty 89 Series rail enhances rigidity, while anti-rotation tabs and a stainless steel center index dowel ensure precise alignment and consistent performance. Designed to seamlessly pair with most lower receivers, the Broadsword-89 transforms your setup into a match-grade rifle. Features of the Sons of Liberty Broadsword-89 Upper Receiver: Available Calibers: .223 Wylde & 6mm MAXAvailable with multiple barrel lengthsExtended barrel nutDrivelock tensioning crossboltsSons of Liberty 89 series rail SOLGW M4-L89 Broadsword .300BLK 8.5" Upper Receiver M4L89BSUPPER-8.5-300