Sons of Liberty Gun Works Broadsword L89 .223 Wylde Barreled Upper Receiver - 14.5" - P/W Plan B

The Sons of Liberty Gun Works Broadsword L89 in .223 Wylde with a 14.5-inch barrel ships with a Plan B flash hider pinned and welded to bring the overall barrel assembly to a 16-inch non-NFA rifle length. The Plan B mount provides a direct suppressor attachment path for Plan B compatible suppressors.

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 14.5-inch 416 stainless steel barrel features an SPR profile, a 1-in-7 twist rate, a .223 Wylde chamber, and a mid-length gas system with a .750-inch gas block journal. The muzzle is threaded 5/8x24 under the pinned and welded Plan B flash hider. The Broadsword-89 billet upper receiver and L89 DriveLock rail use an extended barrel nut, tensioning crossbolts, a keyed upper receiver face, anti-rotation tabs, and a stainless steel center index dowel for a rigid receiver-to-handguard interface.

The Broadsword-89 billet upper is compatible with standard-dimension milspec contour lower receivers.

The L89 DriveLock rail is an M-LOK handguard providing a rigid, repeatable mounting surface for accessories and optic-dependent systems. Handguard length is 13.75 inches.

The 14.5-inch barrel with mid-length gas and a pinned and welded suppressor mount is well suited for general-purpose rifle builds that prioritize suppressor compatibility at a non-NFA overall length.

Sons of Liberty Gun Works manufactures firearms and components in the United States. Contact SOLGW for warranty details.