The Strike Industries Ultimate Dust Cover Capsule (brand part no. ARUDCE0322) brings the same adjustable-fit dust cover Strike Industries built for AR-15, M4, and M16 rifles, finished here in a capsule-style body and Flat Dark Earth polymer. It’s a direct-fit replacement for a worn or damaged factory ejection port cover on rifles chambered in .223/5.56, and it swaps in without any modification to the upper. The capsule design keeps the same wear-compensating set screw as the standard Ultimate cover, so fit stays tight over time instead of loosening up like a stock cover. It’s a clean way to match a Flat Dark Earth build while upgrading the cover’s function.

Key Specifications

• Features an adjustable detent set screw that compensates for wear on the receiver over time.
• The same set screw lets you dial in opening tension for a tighter, more consistent cover action.
• Compatible with AR-15, M16, and M4 platform rifles chambered in .223/5.56.
• Fits billet upper receivers in addition to standard forged uppers.
• Built with a capsule-style cover body, distinct from the standard Ultimate profile.
• Finished in Flat Dark Earth polymer to match tan and FDE builds.
• Includes the dust cover, spring, and pin needed for a complete installation.

Frequently Asked Questions

What makes the capsule version different? It uses a capsule-style cover body finished in Flat Dark Earth, while keeping the same adjustable set screw as the standard Ultimate Dust Cover.

Will it fit a billet upper? Yes, it’s built to fit billet uppers as well as standard forged AR-15/M4/M16 uppers.

What’s included with it? It ships with the cover, spring, and mounting pin needed for installation.

Buy the Strike Industries Ultimate Dust Cover Capsule

Match your Flat Dark Earth build and tighten up cover fit at the same time with the Strike Industries Ultimate Dust Cover Capsule. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more gun parts and accessories from the full Strike Industries lineup we carry.