The Diligent Defense CBAH muzzle device in 1/2×28 is a CNC-machined 17-4 PH stainless steel device made to work with common .900-24 silencer mounts. It is heat treated to H900 and has a .33-inch bore for .30 caliber and smaller projectiles. Its 360-degree port orientation means no shims are required, and a 13/16-inch rear hex lets you install and remove it with a standard wrench. At 1.45 inches long and 1.9 ounces, it adds little to a threaded rifle barrel.

Key Specifications

• The thread is 1/2×28, the pattern you need on the barrel to mount it.
• Material is 17-4 PH stainless steel, heat treated to H900 for strength.
• The bore is .33 inch, sized for .30 caliber and smaller projectiles.
• It works with common .900-24 silencer mounts, including the DDC Zilch, Q Plan B and Rearden Atlas.
• The 360-degree port orientation means no shims are required during installation.

Frequently Asked Questions

Which silencer mounts is the CBAH made for? Diligent Defense lists compatibility with common .900-24 silencer mounts such as the DDC Zilch, Q Plan B and Rearden Atlas.

Do I need shims to install it? No. All critical alignment features are machined in one setup, and the 360-degree port orientation means no shims are required.

Is there anything to know before using it with a suppressor? Diligent Defense says to always confirm alignment before use, and notes that using this muzzle device may void the warranty policy of some silencer manufacturers.

Buy the Diligent Defense CBAH Muzzle Device, 1/2×28

A good muzzle device is machined to a fixed alignment rather than shimmed into position, and this one is built that way from H900 stainless. Browse it alongside the rest of our AR muzzle devices for fast, insured shipping from our Lubbock, Texas gun shop.