Sons of Liberty Gun Works L89 V2 5.56x45mm NATO 16.5 inch Upper Receiver NOX-9 Flash Hider Black M4L89UPPER-13.7-556. This system clamps the rail onto the steel barrel nut with extreme force and precision while also driving the handguard rearward...
Sons of Liberty Gun Works L89 V2 5.56x45mm NATO 16.5 inch Upper Receiver NOX-9 Flash Hider Black M4L89UPPER-13.7-556. This system clamps the rail onto the steel barrel nut with extreme force and precision while also driving the handguard rearward...