5.56, 1:7, 18", S2W, MID

For the Daniel Defense 5.56 NATO 18" (457.2 mm) 1:7 CMV CHF Mid‑Length S2W Barrel Assembly the one factory‑certain spec is the barrel length: 18" (457.2 mm); other single “height” or “width” numbers are not normally published because they depend on contour, the gas‑block style and placement, and any muzzle device. Expect the outside diameter (max width) of an AR‑pattern 18" rifle‑contour barrel to be in the neighborhood of 0.75–1.1" (19–28 mm) and the height from the bottom of the barrel to the tallest feature (gas block or front sight) to be roughly 1.25–2" (32–51 mm) — installed muzzle devices or a taller gas block will increase those numbers. Because this is a mid‑length gas system, the gas port / gas‑block area is typically positioned nearer the middle of the handguard (commonly around ~9–10 in from the chamber, depending on exact chamber/extension length), which affects where the tallest feature sits along the barrel.

All of Daniel Defense’s Barrels offer high performance and a long lasting construction. All barrels are cold-hammer forged and made from 4150 Chrome Moly Vanadium steel with a mil-spec heavy phosphate coating as well as a chrome lining for superior durability. In addition, Daniel Defense Barrels are offered in a massive assortment of configurations, with options available for different lengths, gas-blocks, thread pitches, and calibers.

Features:

• Cold-hammer forged in
• Made from 4150 Chrome Moly Vanadium steel
• Mil-spec heavy phosphate coating
• Chrome lined
• Available different lengths, gas-blocks, thread pitches, and calibers