13.7" Ballistic Advantage, Modern Series- Govt Profile, Mid Gas, 1:7, 5.56 NATO $122.00 Ballistic Advantage
AR15 Barrel - 5.56 NATO - 13.7" Intermediate Gas - 1:7 - 4150 - Chrome Lined Phosphate $142.50 KAK Industry
13.7" Ballistic Advantage, Performance Series- BA Hanson Profile, Mid Gas, 1:7, 5.56 NATO, W/ pinned low-pro gas block $184.00 Ballistic Advantage
13.7" Ballistic Advantage, Performance Series- BA Hanson Profile, Carbine Gas, 1:7, 5.56 NATO, W/ pinned low-pro gas block $184.00 Ballistic Advantage
