The Strike Industries Ultimate Dust Cover (part no. ARUDCE0322) replaces the standard AR-15 ejection port cover with a capsule-style design that includes an adjustable detent set screw, letting you compensate for receiver wear and dial in exactly how much force it takes to pop the cover open. Strike Industries builds it from black polymer and includes the cover, spring, and pin, so it’s a complete, direct-fit replacement. It’s compatible with AR-15/M16/M4 rifles in .223/5.56 and fits Billet uppers, which don’t always accept standard covers.

Key Specifications

• Features an adjustable detent set screw to compensate for receiver wear.
• Lets you tune the opening power of the cover.
• Compatible with AR-15/M16/M4 rifles in .223/5.56.
• Fits Billet uppers.
• Includes the cover, spring, and pin.
• Built in a capsule design.
• Measures about 3.46 inches.

Frequently Asked Questions

Will this fit a Billet upper? Yes, it fits Billet uppers, which don’t always accept a standard dust cover.

What does the adjustable detent screw do? It lets you compensate for receiver wear and tune how much force it takes to pop the cover open.

Buy the Strike Industries Ultimate Dust Cover, Capsule Design

A worn ejection port cover starts popping open under recoil or sticking shut, and this adjustable Strike Industries cover fixes both problems in one part. Order it from our Lubbock, Texas gun shop and it ships fast to your door, along with more gun accessories and parts.