Sons of Liberty Gun Works M4-EXO3 5.56 14.5" P/W HUX - Barreled Upper

The same duty-grade EXO3 barreled upper — pinned and welded with the HUXWRX flash hider. The Sons of Liberty Gun Works M4-EXO3 5.56 NATO barreled upper with P/W HUX delivers the 3rd Gen EXO3 steel-barrel-nut handguard, Liberty Fighting Barrel, and V2 4140 steel gas block with the HUXWRX muzzle device permanently installed to meet the 16-inch OAL requirement. No BCG or charging handle included.

The Sons of Liberty Gun Works M4-EXO3 5.56 NATO Barreled Upper is a 14.5-inch 5.56 NATO mil-spec AR-15 barreled upper receiver featuring the 3rd Gen EXO3 13-inch M-LOK handguard with steel barrel nut, SOLGW Liberty Fighting Barrel, V2 4140 steel gas block, and pinned-and-welded HUXWRX flash hider. BCG and charging handle not included.

Four specifications define this upper's duty-grade quality. The 3rd Gen EXO3 rail uses a steel barrel nut for a more rigid, durable barrel nut interface compared to aluminum alternatives, resisting the loosening that sustained firing and accessory loading can produce on duty handguards carrying lights and lasers. Seven-sided M-LOK slots with anti-rotation tabs provide direct accessory mounting with positive registration, preventing rotation under lateral force. The V2 gas block is machined from 4140 steel with a .750-inch journal and appropriately sized gas port for an efficient, leak-free gas seal. The HUXWRX muzzle device is pinned and welded to the 14.5-inch Liberty Fighting Barrel to meet the 16-inch federal OAL requirement, combining suppressor-compatible muzzle device geometry with permanent installation on this configuration.

Compatible with mil-spec AR-15 lower receivers. 14.5-inch barrel, 1/2x28 thread pitch. HUXWRX flash hider pinned and welded to meet 16-inch OAL. BCG and charging handle not included — source separately.

Mil-spec 7075-T6 aluminum upper, black anodize, T-Mark engraved. 14.5-inch 5.56 NATO Liberty Fighting Barrel. 13-inch EXO3 M-LOK handguard, steel barrel nut. V2 4140 steel gas block.

Built for duty AR-15 builds, suppressor-host configurations, and law enforcement patrol rifles where the HUXWRX muzzle device is the preferred pinned-and-welded option.

By Sons of Liberty Gun Works. BCG and charging handle not included. Standard SOLGW warranty applies.