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Anyone who runs more than one AR upper knows the guessing game. Two rifles side by side, both black, both wearing the same furniture, and now you're squinting at the barrel or pulling the bolt to figure out which one takes what. Yankee Hill Machine built this dust cover to end that. It wears a clean "5.56 NATO" marking right on the cover, so a quick glance tells you what's living in that upper before you ever grab a mag.
Functionally it does everything a standard dust cover should. When your rifle is stored, slung, or bouncing around in a truck, the spring loaded cover keeps dust, moisture, and range grit out of the action, then pops open the moment the bolt cycles. The spring keeps it seated tight so you don't get any annoying rattle on the move.
YHM has been marking upper receivers by caliber for years, and this cover extends that same idea to a part you can swap yourself. It's built from durable aluminum with a Mil-Spec hard anodized finish that shrugs off corrosion whether you're at the range or out in the weather. At right around 4.9 inches and a fraction of an ounce, it adds no meaningful weight to your build. Made in the USA.
This is a complete assembly, not just the flap. You get the dust cover, the hinge rod, the retaining clip, and the spring, which is everything needed to install it on a standard pattern AR-15 upper. It drops in and installs the same way as any factory dust cover, so if you've done one before this is a five minute job. If it's your first time, a punch and a little patience with the spring tension will get you there. It fits standard AR-15 and M16 pattern upper receivers, making it an easy pickup for builders, armorers, and anyone juggling multiple calibers on one platform.
Yes, it's designed to fit standard pattern AR-15 and M16 upper receivers. If your upper takes a mil-spec dust cover, this one will work. It installs the same way as the factory cover it replaces.
It's the full assembly. You get the marked dust cover along with the rod, retaining clip, and spring, so you have everything needed to install it. There's nothing extra to source separately.
It's a fast visual reference for anyone running more than one upper or multiple rifles in different calibers. A glance at the ejection port tells you the chambering before you load a magazine. It's a simple way to keep your builds organized on the bench and at the range.
It's built from durable aluminum with a Mil-Spec hard anodized, corrosion-resistant finish. That combination holds up well to range use, storage, and time out in the elements. It's also made in the USA.
| UPC | 816701017687 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | YHM-111-556 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 4.9000 |
| Product Type | Dust Cover |
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