6th North Carolina Infantry
Co A - unknown
Co B - Madison Rangers
Co C - Black Mountain Boys
Co D - unknown
Co E - Rutherford Volunteers
Co F - Hawfield River Boys
Co G - Jeff Davis Macon County Guards
Co H - Caswell Boys
Co I - King Mountain Greys
Co K - Columbus Riflemen

According to Confederate Military Land Units by W.J.Tancig. Can't tell you which ones fought at First Bull Run, though.

JR