AR Dust Cover
Dust covers don’t get much attention, but any serious AR builder knows that protecting your ejection port matters — especially during storage, transport, or any build where the upper is sitting on the bench waiting for the next stage. A quality AR dust cover keeps fouling, debris, and moisture out of your receiver so your rifle is ready to run when you need it.
We carry AR dust covers from builders like Aero Precision, Sharps Bros, Bootleg, and Strike Industries — ejection port doors and full billet covers with finishes ranging from black phosphate steel to anodized options in OD green and flat dark earth. Whether you’re running a milspec setup or a custom build with a specific color scheme, the right cover is.
Pick your finish, confirm it fits your upper, and get it ordered today — we’ll have it out the door fast.
- AR Dust Cover Add to cart
Battle Arms Development Smile Dust Cover features laser engraving for an affordable AR15/M16 platform upgrade. This B.A.D. Inc. accessory delivers custom style without breaking the bank.
$14.36Low Stock - AR Dust Cover Add to cart
CMMG 9mm Ejection Port Cover Accessory Kit keeps dust out and directs spent brass away with included port cover, rod, spring, and gas deflector. Compatible with CMMG 9mm uppers and most standard AR-15 upper receivers.
$15.00Low Stock - AR Dust Cover Add to cart
Fortis Manufacturing’s billet dust cover is machined from solid aircraft-grade aluminum for superior durability and reliability. Direct replacement for mil-spec AR15 uppers in .223/5.56 compatible builds.
$23.70In Stock - AR Dust Cover Add to cart
Fortis Manufacturing billet dust cover machined from aircraft-grade aluminum for superior durability on mil-spec AR15 uppers. Straightforward installation on .223/5.56 compatible builds.
$23.70Low Stock - AR Dust Cover Add to cart
Magpul Enhanced Ejection Port Cover delivers tool-free installation and superior corrosion resistance with impact-resistant polymer construction. Snaps into place without removing handguard or barrel nuts.
$14.20In Stock - AR Dust Cover Add to cart
Magpul Enhanced Ejection Port Cover in Flat Dark Earth snaps on without tools or handguard removal, engineered from corrosion-resistant injection molded polymer that won’t bend or deform.
$14.20In Stock 
Strike ARUDCEFLAG Ultimate Dust Cover Flag AR-15, M4, M16 Black Polymer 3.46″
Strike IndustriesAdd to cartAR Dust Cover Add to cartStrike ARUDCEFLAG Ultimate Dust Cover features an adjustable detent set screw to compensate for receiver wear and tune opening power to your preference. Fits AR-15, M4, M16 platforms and is compatible with Billet Uppers.
$14.95In Stock- AR Dust Cover Add to cart
Yankee Hill Machine’s caliber-marked dust cover keeps your AR upper organized when swapping calibers, complete with rod, retaining clip, and spring included.
$15.50In Stock - AR Dust Cover Add to cart
Yankee Hill Machine caliber-marked dust cover keeps your 5.56 NATO upper receiver identified and protected with everything needed for quick installation. Perfect for shooters who swap calibers on their uppers.
$15.50In Stock - AR Dust Cover Add to cart
Yankee Hill Machine caliber-marked dust cover simplifies caliber swaps on your upper receiver with included rod, retaining clip, and spring. Perfect for shooters running multiple calibers on the same platform.
$15.50In Stock - AR Dust Cover Add to cart
Yankee Hill Machine dust cover assembly keeps debris and contaminants out of your AR-15 receiver with included rod, retaining clip, and spring for secure installation.
$15.50In Stock
