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Luth-AR
Overview
The Luth-AR Ejection Port Cover Assembly, model UR-05A, is a robust steel dust cover designed to protect the ejection port from debris and contaminants when the action is closed. This component ensures reliable operation by keeping the internal mechanisms clean, which is especially important for builds utilizing a carbine gas system and chambered in 5.56 NATO. You'll often find this dust cover in rifles focused on functionality and durability.
Prices checked
Luth-AR Ejection Port Cover Assembly - UR-05A ranked #27 of the 65 dust covers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #20 of the 134 dust covers builders have added. Builds with this dust cover are split between 5.56 NATO (56%) and .223 Wylde (15%), split between mid-length (50%) and carbine-length (40%) gas systems, and mostly AR-15 (91%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, but today 2 of the 7 retailers we track have it in stock. Buying today, the lowest price is $1.99 at Palmetto State Armory, above October's low of $1.79, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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 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 Luth-AR Ejection Port Cover Assembly - UR-05A
| Build | Parts | Total |
|---|---|---|
 | 16 | $297.63 |
 | 27 | $2964.73 |
 | 18 | $741.03 |
 | 28 | $1340.88 |
 | 27 | $2252.38 |
 | 14 | $739.18 |
 | 14 | $879.15 |
 | 21 | $657.75 |
1 global rating
Top reviews
For a budget build this Luth AR dust cover assembly does the job. Comes complete with the rod, c clip, and spring already on. Hinge pin is a tight fit which is good, no rattle. Black phosphate matches a milspec upper just fine. Cant ask for more at this price.
