Strike Industries ARUDCE0322 Ultimate Dust Cover Capsule for AR-15, M4, M16 - Black Polymer, 3.46"

The Strike Industries Ultimate Dust Cover Capsule is a modern upgrade for your AR-15, M4, or M16 platform rifle. Built from high-density polymer rather than traditional stamped steel, it delivers superior durability while keeping dust, debris, and environmental crud out of your receiver and bolt carrier group. Whether you're running a precision rifle, a duty gun, or a range workhorse, a quality dust cover is one of those small upgrades that pays dividends over thousands of rounds.

What sets the Strike Ultimate apart is the adjustable detent set screw—a feature that compensates for receiver wear over time and lets you fine-tune how easily the cover opens and closes. As your rifle breaks in or if you swap uppers, you can dial in the resistance to match your preference: tighter retention when you're moving through rough terrain, or easier operation if you prefer a lighter touch. A small flathead screwdriver is all you need to adjust the ball detent and dial it in exactly how you want it.

Measuring 3.46 inches, this dust cover capsule comes in black polymer and fits standard AR-15, M4, and M16 platforms. It's the kind of functional accessory that doesn't scream for attention but proves its worth every time you deploy your rifle or set it down on a workbench. Strike Industries designs parts for shooters who care about fit, finish, and reliability—and this dust cover reflects that ethos.

Key Features

• High-density polymer construction for enhanced durability compared to traditional steel covers
• Adjustable detent set screw compensates for receiver wear and wear-in over time
• Fine-tune opening and closing resistance to your preference with a flathead screwdriver
• Compatible with AR-15, M4, and M16 platforms
• Black polymer finish

Specifications

Frequently Asked Questions

Will this dust cover fit my AR-15 platform?

Yes. The Strike Industries Ultimate Dust Cover Capsule is designed to fit AR-15, M4, and M16 platforms.

How do I adjust the detent on the dust cover?

Use a small flathead screwdriver to depress the ball detent and adjust it as needed. This allows you to increase or decrease the opening power and compensate for receiver wear over time.

Is this dust cover better than a standard steel cover?

The Strike Industries Ultimate is constructed from high-density polymer, which offers improved durability and functionality compared to traditional stamped-steel dust covers. The adjustable detent screw is a feature you won't find on standard covers, giving you the ability to fine-tune how the cover opens and closes.

What comes in the box?

You receive the Strike Industries dust cover capsule. A small flathead screwdriver is recommended for detent adjustment, though most shooters already have one in their range kit.