Sons of Liberty Gun Works Broadsword Billet/L89 .223 Wylde Precision 12.5" Bbl L89 Rail No Muzzle Device Upper Receiver U-BS-L89-556-125-NMD

The Sons of Liberty Gun Works Broadsword Billet/L89 Upper Receiver is a precision-engineered, large-footprint upper assembly designed for those building high-end AR pistols or Short Barreled Rifles (SBRs). This model utilizes the Broadsword Billet Upper Receiver, which is machined with extra material in high-stress areas to increase structural rigidity and minimize the harmonics that can degrade accuracy. It features a 12.5-inch precision barrel chambered in .223 Wylde, a chambering specifically designed to safely handle both 5.56 NATO and .223 Remington with match-grade consistency. The "No Muzzle Device" (NMD) designation allows builders to choose their own suppressor mount or flash hider for the 1/2x28 threaded muzzle. It is rounded out with the L89 Drivelock handguard, which uses a titanium barrel nut to provide a lightweight yet ultra-stable interface for optics and lasers.