sons of liberty gun works
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U-BS-L89-556-145-PB-SOLGW
657628672845
U-BS-L89-556-145-PB
The Sons of Liberty Gun Works Broadsword Billet/L89 Upper Receiver is a premium, precision-oriented barreled upper assembly specifically configured for users of the Rearden or Q Plan B mounting system. This model features a 14.5-inch 416R stainless steel barrel with an SPR profile, which is permanently pinned and welded (P&W) with a Plan B-compatible flash hider to reach a legal non-NFA length of 16 inches. Built on the reinforced Broadsword-89 billet upper receiver, it utilizes a keyed interface and an extended titanium barrel nut to create an exceptionally rigid connection with the L89 Drivelock handguard, virtually eliminating rail flex and ensuring consistent zero retention for mounted lasers and optics.