This Ballistic Advantage AR-15 Barrel 11.5″ -5.56NATO is a Government Profile Modern Series Barrel and is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. The Ballistic Advantage AR-15 Barrel 11.5″ -5.56NATO is a 1:7 twist with a carbine length gas system. This barrel also has a 1/2×28 thread for muzzle devices. The Government profile has many perceptions of the benefits to it; heat dissipation, weight, with reinforcement around the key locations.
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