The Sons of Liberty M4-89 5.56mm NATO 12.5 inch upper receiver pairs SOLGW’s Combat Barrel with the 11.5 inch M89 rail for a compact, fully functional AR-15 upper build. This configuration comes with an A2 flash hider and ships as an upper half only, with no BCG and no charging handle.
Key Features
SOLGW Combat Barrel with a 12.5 inch length for a compact AR-15 setup
11.5 inch M89 rail for a stable mounting platform for optics and accessories
A2 flash hider muzzle device included
Upper half only, with no BCG or charging handle
Build confidence starts with the right upper—add your preferred lower, bolt carrier group, and charging handle for a complete configuration.
