The Fortis Manufacturing Carbon Fiber Billet Dust Cover in black (brand part no. DC-CF-BLK) replaces the ejection port cover on an AR-15 upper with a part machined from a solid piece of aircraft grade aluminum. That construction gives it more durability than polymer versions. It installs easily on .223/5.56 compatible builds and fits into mil-spec AR-15 uppers. This is the black color in the Fortis carbon fiber series, a quick way to upgrade the form and function of the rifle.

Key Specifications

• Material is aircraft grade 6061-T6 aluminum, machined from a solid piece for durability over polymer covers.
• The finish is Type III hardcoat anodize, a hard surface that resists wear on a part that gets opened and closed constantly.
• The color is black, part of the carbon fiber version of the Fortis billet dust cover.
• Weight is 0.4 ounces, so the upgrade adds almost nothing to the rifle.
• Length is 3.13 inches, sized to cover the ejection port on an AR-15 upper.
• Width is 0.885 inches, matching the opening it closes.
• The package includes the dust cover, spring and C-clip, everything needed to replace the existing cover.

Frequently Asked Questions

Will it fit my upper? Fortis designed it for mil-spec AR-15 uppers and .223/5.56 compatible builds. Because mil-spec uppers vary, Fortis notes it cannot guarantee fit on every application.

What comes in the package? The package includes the ejection port dust cover, the dust cover spring and the C-clip.

What is it made from? It is machined from aircraft grade 6061-T6 aluminum and finished in Type III hardcoat anodize.

Buy the Fortis Carbon Fiber Billet Dust Cover, Black

A dust cover is a small part, but it is one you touch every time you work the rifle, so build quality shows. This black carbon fiber version gives a mil-spec AR-15 upper a stronger cover without changing how it works. Order it from our Lubbock, Texas shop for fast direct shipping, and browse more AR dust covers for your build.