Strike Industries Ultimate Dust Cover Capsule – AR-15 / M4 / M16, Flat Dark Earth Polymer, 3.46" – ARUDCE0322 (UPC: 700598350593)
Give your rifle a functional and cosmetic upgrade with the Strike Ultimate Dust Cover Capsule AR-15, M4, M16 Flat Dark Earth Polymer 3.46" ARUDCE0322. This enhanced ejection port cover combines quick, tool-less installation, ultra-lightweight high-density polymer construction, and a sleek Flat Dark Earth (FDE) finish that matches modern AR builds perfectly. Optics Agent+2Primary Arms+2
Compatible with AR-15, M4, and M16 rifles chambered in .223/5.56, including many billet uppers, this capsule-style Ultimate Dust Cover keeps your action cleaner while adding style and smart features over a mil-spec stamped steel door. Optics Agent+2Primary Arms+2
Lightweight, High-Density Polymer in Flat Dark Earth
The Strike Ultimate Dust Cover is molded from high-strength, high-density polymer rather than thin sheet metal. Primary Arms+2AR15Discounts+2
Benefits of the polymer construction:
Extremely lightweight – around 0.3 oz, helping keep front-end weight down on AR builds. Primary Arms+1
Will not corrode, rust, or fade like traditional steel covers, even with hard use and exposure to the elements. Primary Arms+1
Resists bending or deforming out of spec, maintaining a consistent seal over time. Primary Arms+2AR15Discounts+2
The Flat Dark Earth finish pairs nicely with FDE receivers, rails, stocks, and accessories, giving your rifle a cohesive, modern look while still being all business. Optics Agent+2Ammunition Depot+2
“True Seal” Internal Lip – Better Protection From Dust & Debris
Strike’s Enhanced Ultimate Dust Cover line features a patent-pending “True Seal” internal lip, designed to provide a tighter seal around the ejection port than standard covers. Primary Arms+1
What the True Seal lip does for you:
Helps keep dust, sand, and debris out of the upper receiver and bolt carrier group.
Supports improved reliability in harsh or dirty environments, whether you’re on the range, in the field, or on duty.
Works in conjunction with the polymer body to maintain sealing without warping or rusting.
If you run your rifle in real-world conditions—not just on a bench—this added protection is a meaningful upgrade.
Adjustable Detent Set Screw – Tune Your Opening Force
A standout feature of the Strike Ultimate Dust Cover is the integrated adjustable detent set screw. Optics Agent+2Primary Arms+2
Allows you to compensate for receiver wear over the life of the rifle.
Lets you increase or decrease the opening power using a simple flathead screwdriver. Primary Arms+2Right To Bear+2
Helps ensure the cover stays securely closed until your rifle cycles and intentionally snaps it open.
Instead of living with a cover that pops open too easily—or not easily enough—you can tailor the feel exactly how you like it.
Quick-Disconnect Design – Install in Seconds, No Tools
The Enhanced Ultimate Dust Cover is known as the world’s first quick-disconnect ejection port cover for the AR-15. Primary Arms+2AR15Discounts+2
Key installation advantages:
Spring-loaded internal detent rod allows the cover to be attached or detached in about 5–10 seconds, often without tools. Primary Arms+2Right To Bear+2
A cut-out window in the design makes it easier to access the rod during install or removal. Primary Arms+2AR15Discounts+2
No need to fight a long steel rod or remove the handguard on most builds.
If you frequently build, rebuild, or customize uppers, this dust cover can save you a surprising amount of time and frustration.
Capsule Design – Clean, Modern Look With Easy Identification
This specific model is the “Capsule” design version of the Strike Ultimate Dust Cover, part number ARUDCE0322 / SI-AR-UDC-E-03-223-FDE. Got Guns+3Brownells+3Optics Agent+3
Distinctive capsule-style engraving on the face of the cover for a modern visual touch. Primary Arms+2Right To Bear+2
Flat Dark Earth color helps separate this upper from others at a glance and blends with FDE furniture.
Same streamlined profile as other Enhanced UDCs while delivering its own aesthetic twist.
It’s functional, but it also adds a bit of personality to your rifle without going over the top.
AR-15 / M4 / M16 Compatible – Including Many Billet Uppers
This Strike Industries Ultimate Dust Cover Capsule FDE is designed for:
AR-15, M4, and M16 platforms chambered in .223/5.56. Optics Agent+2AR15Discounts+2
Mil-spec upper receivers as well as many billet uppers, thanks to the enhanced, slightly thinner profile of the latest UDC-E design. Primary Arms+1
Package typically includes everything you need:
Always check fitment on your specific upper receiver, but most standard AR-15 uppers accept this cover with no modification.
Ultra-Lightweight, Strong, and Maintenance-Free
Compared to old-school stamped steel doors, the Strike Ultimate Dust Cover Capsule FDE offers real practical advantages:
You get a durable, low-maintenance component that you can install and forget—until it’s time to show off your build.
Key Specifications – Strike ARUDCE0322 Ultimate Dust Cover Capsule FDE
From Strike Industries and major retailers, the specs for the Strike Ultimate Dust Cover Capsule AR-15, M4, M16 Flat Dark Earth Polymer 3.46" ARUDCE0322 (UPC: 700598350593) are: Top Brass Tactical+4Optics Agent+4Primary Arms+4
Brand: Strike Industries
Model Line: Ultimate Dust Cover / Enhanced UDC-E
Style: Capsule design
Part Numbers:
ARUDCE0322
SI-AR-UDC-E-03-223-FDE
UPC: 700598350593
Platform: AR-15 / M4 / M16 (.223/5.56)
Length: 3.46"
Weight: ~0.3 oz
Material: High-strength, high-density polymer
Color / Finish: Flat Dark Earth (FDE)
Features:
Patent-pending “True Seal” internal lip for tighter port sealing
Adjustable detent set screw for tuning opening power and compensating for receiver wear
Spring-loaded internal detent rod for fast, tool-less installation and removal
Cut-out window to assist with install while maintaining seal
Resistant to corrosion, rust, fading, and deformation
Includes: Dust cover, spring, and pin
Why Choose the Strike Ultimate Dust Cover Capsule Flat Dark Earth?
Opt for the Strike Ultimate Dust Cover Capsule AR-15, M4, M16 Flat Dark Earth Polymer 3.46" ARUDCE0322 if you want:
A modern, FDE ejection port cover that matches your Flat Dark Earth build
A quick-disconnect design that installs in seconds and simplifies upper receiver work
Added protection from dirt and debris thanks to the True Seal internal lip
A lightweight, corrosion-proof polymer upgrade over old-school steel covers
Fine-tuned functionality via an adjustable detent set screw and spring-loaded internals
Whether you’re assembling a new AR, refreshing an old workhorse, or dialing in a custom FDE rifle, this Strike Industries Ultimate Dust Cover Capsule is a smart, affordable, and highly functional upgrade.
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