Aero Precision BA 5.56NATO 16" 1/7 M4 Carb-Len Modern Series
Product Features & Specifications The Ballistics Advantage 16" 5.56 M4 Carbine Length AR 15 Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. With a carbine gas system length and .750" gas block jour
