Daniel Defense AR-15 Barrel 5.56x45mm NATO 18" Strength 2 Weight (S2W) Contour 1:7" Twist Mil-Spec Heavy Phosphate

All Daniel Defense Cold Hammer Forged AR-15 Barrels are constructed of Mil-Spec 4150 Chrome Moly Vanadium Steel that is hydraulically shaped by carbide steel hammers around a precision machined mandrel to form the chamber, lands, and grooves. This Hammer Forging process creates a defect-free bore with the most consistent chamber possible, and each of Daniel Defense's barrels undergoes a Magnetic Particle Inspection (MPI) test to ensure this standard of perfection is achieved. All stripped barrel