The Ballistic Advantage 5.56 chambered 13.7 inch Government Profile Mid-Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
Material: 4150 Chrome Moly Vanadium
Finish: QPQ Corrosion Resistant
Gas System Length: Mid-Length
Gas Block Journal .750″
Twist Rate: 1:7 inches
Muzzle: 1/2×28 Threaded
Weight: 25 oz.