AR-15 Billet Aluminum Dust Cover Black – Fortis Manufacturing

Fortis Manufacturing, Inc.
MPN:
AR15DstCvr-CF-BLK
UPC:
850015927010
$28.45
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The Fortis Manufacturing AR-15 Billet Aluminum Dust Cover delivers a premium, American-made upgrade over standard polymer ejection port covers, machined from a single solid piece of aircraft-grade 6061-T6 aluminum for lasting durability and a refined look.

  • Machined from aircraft-grade 6061-T6 aluminum billet for maximum strength
  • Type III hardcoat anodize finish resists corrosion, wear, and harsh conditions
  • Fits all mil-spec AR-15 uppers chambered in .223/5.56 NATO
  • Ultralight at just 0.4 oz — no added weight to your build
  • Complete installation kit included: spring and C-clip supplied
  • Proudly designed and manufactured in the USA by Fortis Manufacturing

Who This Is For

This dust cover is the ideal upgrade for AR-15 owners who want to replace a worn or flimsy factory polymer cover with a precision-machined aluminum component. Whether you're building a duty rifle, competition gun, or a premium range build, the Fortis Billet Dust Cover adds a touch of craftsmanship and long-term reliability that mil-spec plastic simply can't match.

Fortis Manufacturing AR-15 Billet Aluminum Dust Cover in black anodized finish, front view Fortis Manufacturing AR-15 Billet Aluminum Dust Cover installed on upper receiver, side profile

Specifications

Brand Fortis Manufacturing, Inc.
Material Aircraft-Grade 6061-T6 Aluminum
Finish Type III Hardcoat Anodize – Black
Weight 0.4 oz
Length 3.13"
Width 0.885"
Compatibility Mil-Spec AR-15 Uppers (.223 / 5.56 NATO)
Includes Dust Cover, Spring, C-Clip
Country of Origin Made in the USA

Frequently Asked Questions

Will this dust cover fit my AR-15 upper receiver?

Yes. The Fortis Billet Aluminum Dust Cover is designed to fit all mil-spec AR-15 upper receivers chambered in .223 Remington or 5.56 NATO. It installs using the included spring and C-clip and requires no permanent modification or special tools — it's a straightforward drop-in replacement for your existing ejection port cover.

Why choose an aluminum dust cover over a standard polymer one?

Standard factory dust covers are typically made from stamped steel or polymer, which can flex, crack, or wear over time — especially with heavy use. The Fortis billet aluminum cover is machined from a single piece of 6061-T6 aluminum and finished with a Type III hardcoat anodize, making it significantly more resistant to impact, abrasion, and environmental wear. It also adds a premium aesthetic that matches high-end billet upper and lower receiver sets.

Is this compatible with AR-10 or .308 builds?

No. This dust cover is sized specifically for mil-spec AR-15 uppers chambered in .223/5.56. AR-10 and .308-platform rifles use a larger ejection port and require a correspondingly larger dust cover. Be sure to verify your receiver's platform before purchasing.