Home / Upper Receivers & Conversion Kits / Sons of Liberty Gun Works / Sons of Liberty Gun Works Broadsword Billet/L89 .223 Wylde Precision 14.5" Bbl L89 Rail P&W Plan B FH Upper Receiver U-BS-L89-556-145-PB
Sons of Liberty Gun Works Broadsword Billet/L89 .223 Wylde Precision 14.5" Bbl L89 Rail P&W Plan B FH Upper Receiver U-BS-L89-556-145-PB
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MSRP
$1,375
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Updated
Aug 26, 2026
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13.75 L89 Handguard"
14.5 Precision SPR Barrel"
5/8X24 Threads
Plan B Flash Hider Installed, Compatible with Q/HUB Suppressors
Specifications
Caliber
Model
Broadsword Upper
MPN
U-BS-L89-556-145-PB
UPC
657628672845
Description
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. Sons of Liberty Gun Works Broadsword Billet/L89 .223 Wylde Precision 14.5" Bbl L89 Rail P& W Plan B FH Upper Receiver U-BS-L89-556-145-PB
