Sons of Liberty Gun Works L89 V2 5.56 NATO 13.7" Upper Receiver – M4/AR-15 Platform

The Sons of Liberty Gun Works L89 V2 upper receiver assembly is chambered in 5.56 NATO and built around a 13.7-inch barrel, designed to pair with pinned and welded muzzle devices to achieve the 16-inch non-NFA barrel length requirement. This complete upper fits mil-spec AR-15 and M4 lower receivers and features SOLGW's HUX rail system for a lightweight, free-floating handguard configuration.

The assembly includes a mid-length gas system for reliable cycling and reduced recoil impulse. The black finish is applied to both the upper receiver and rail for corrosion resistance. Barrel material is chrome moly vanadium steel with a carbine-profile contour. Designed for shooters who want a compact rifle-length setup without NFA paperwork when properly configured with a pinned muzzle device.

• Caliber: 5.56 NATO
• Type: Complete upper receiver assembly
• Compatible Lower: Mil-spec AR-15/M4
• Barrel Length: 13.7 inches
• Gas System: Mid-length
• Handguard: SOLGW HUX free-float rail
• Material: Forged aluminum upper receiver, CMV steel barrel
• Finish: Black
• Installation: Drops onto any mil-spec lower receiver, no gunsmithing required

Note: This 13.7-inch barrel requires a pinned and welded muzzle device to meet the 16-inch minimum barrel length for non-NFA rifles. Ensure compliance with federal and state firearms laws.