Sons of Liberty Gun Works Broadsword L89A .223 Wylde Barreled Upper Receiver - 18" - No Muzzle

The Sons of Liberty Gun Works Broadsword L89A in .223 Wylde with an 18-inch barrel is the longest option in the L89A lineup, pairing a rifle-length gas system with the ARCA-equipped DriveLock handguard for a precision-oriented upper receiver. It ships without a muzzle device installed.

This is a barreled upper receiver only. It does not include a bolt carrier group or charging handle — both must be sourced separately to complete the upper assembly.

The 18-inch 416 stainless steel barrel features an SPR profile, a 1-in-7 twist rate, a .223 Wylde chamber, and a rifle-length gas system with a .750-inch gas block journal. The muzzle is threaded 5/8x24. The Broadsword-89 billet upper and L89A DriveLock rail use an extended barrel nut, tensioning crossbolts, a keyed receiver face, anti-rotation tabs, and a stainless steel center index dowel for a rigid interface.

The L89A handguard features integrated ARCA with RRS-Lock compatibility, a titanium barrel nut, 7-sided M-LOK, and integral steel QD cups. Handguard length is 16.75 inches. The Broadsword-89 upper is compatible with standard milspec contour lower receivers.

The rifle-length gas system provides the softest recoil impulse and smoothest cycling in the Broadsword lineup, reducing bolt carrier velocity for improved consistency and component longevity.

The 18-inch barrel maximizes velocity from the .223 Wylde chamber and is well suited for precision rifle builds, competition, and applications where ballistic performance at range is the primary objective.

Sons of Liberty Gun Works manufactures firearms and components in the United States.