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Yankee Hill Machine
Overview
The Yankee Hill Machine Co Dust Cover is a steel component designed to protect the chamber of your AR-15 from debris and moisture when not in use. This essential part ensures that your firearm remains clean and operational by shielding the interior from environmental factors. It is commonly found in builds featuring a carbine gas system and chambered for 5.56 NATO, making it a practical choice for those focused on reliable performance.
Yankee Hill Machine Co Dust Cover 556 NATO for AR Rifles - YHM-111-556
Yankee Hill Machine Co Dust Cover 556 NATO for AR Rifles - YHM-111-556 ranked #12 of the 55 dust covers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #14 of the 107 dust covers builders have added. Builds with this dust cover are mostly chambered in 5.56 NATO (78%, then .223 Wylde 16%), split between mid-length (47%) and carbine-length (29%) gas systems, and mostly AR-15 (94%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 6 of the 7 retailers we track have it in stock. It dipped to $13.75 at Brownells for a stretch in August 2026, under its usual $14.69 to $17.49, so sales do come around. Buying today, the lowest price is $14.69 at GritR Sports, above August's low of $13.75, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every dust cover by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Dust Cover Guide →The part most often added in each category by the 98 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Yankee Hill Machine Co Dust Cover 556 NATO for AR Rifles - YHM-111-556
| Build | Parts | Total |
|---|---|---|
 | 26 | $3162.53 |
 | 19 | $2327.09 |
 | 16 | $1394.01 |
 | 20 | $1407.35 |
 | 11 | $1088.75 |
 | 32 | $5919.98 |
 | 32 | $7051.26 |
 | 8 | $630.55 |
 | 23 | $1883.99 |
 | 30 | $3616.59 |
 | 15 | $3582.45 |
 | 21 | $1886.84 |
3 global ratings
Top reviews
Yankee Hill Machine dust cover with the 556 NATO stamp on the cover face is a nice authentic touch on a military style build. Comes complete with rod, spring, and c clip preinstalled. Spring snaps the door open every time the bolt cycles. Easy install.
Replaced a generic dust cover with this YHM 556 marked one. The caliber stamp is a small thing but I like it. Spring tension is correct, pops open hard when the bolt cycles. Hinge pin and c clip went together easily with the right tools.
standard 556 size, fit a BCM upper without any fuss. spring tension snaps it open quick when you charge. the YHM stamp is on the inside so it doesnt mess with the receiver aesthetics
