Sons of Liberty Gun Works Broadsword Billet/L89A .223 Wylde Precision 18" Bbl L89A Int ARCA Rail No Muzzle Device Upper Receiver U-BS-L89A-556-18-NMD

The Sons of Liberty Gun Works Broadsword Billet/L89A Upper Receiver is the flagship precision assembly in the Broadsword lineup, engineered for maximum ballistic performance and structural rigidity. It pairs the reinforced Broadsword-89 billet upper receiver with an 18-inch Precision SPR-profile 416R stainless steel barrel, featuring 3-groove polygonal rifling for sub-MOA consistency. The defining feature of this configuration is the 16.75-inch L89A handguard, which integrates a full-length ARCA rail with RRS-Lock compatibility directly into its base, allowing for instant and rock-solid attachment to tripods. Built with a rifle-length gas system to provide the softest recoil impulse in the series, this "No Muzzle Device" (NMD) version features 5/8x24 muzzle threads—a deliberate choice by Sons of Liberty Gun Works to maximize precision over the standard 1/2x28 threads typically found on 5.56 platforms.