Daniel Defense makes guns that are well known for their great shooting barrels. The new V9 series of M4 rifles in 5.56 feature three barrel profiles, allowing buyers to select the barrel that best meets their needs. There are a number of features which make the Daniel Defense barrels so good. The first is that they’re cold hammer forged. This process hydraulically hammers the barrel blanks around a mandrel that forms the chamber, lands and grooves. The forging process relieves the strain normally found in a barrel blank while delivering exceptional consistency in chamber size. Both contribute to improved accuracy. The barrels are then externally treated using a Melonite treatment, named for the Melonite salt used. This Nitrocarburizing process results in a smooth, slick surface that improves the surface hardness of the barrel while increasing resistance to corrosion and carbon adhesion. The three barrel profiles available in the V9 series include the16” government profile barrel, 16” lightweight profile and the 18” strength-to-weight (S2W) barrel. The S2W is probably the most interesting. It has a constant taper from the chamber to the muzzle. This provides more metal for cooling and strength where it’s most needed, and less metal where it’s less needed. It’s a balance between a standard barrel and a bull barrel. The result is a barrel that performs like a bull barrel but only weighs a little more than a standard barrel. Check out the V9 series guns for yourself on the video.