Click to see full view
Sons of Liberty Gun Works
Overview
The AR-15 Ejection Port Cover Assembly from Sons of Liberty Gun Works is a critical component designed to keep debris out of the receiver when your firearm is not in use. Made of steel and finished in black, this dust cover ensures reliable operation by protecting the ejection port from dirt and moisture, which can be especially important in adverse conditions. This assembly is frequently found in builds utilizing a carbine gas system and chambered in 5.56 NATO, making it a practical choice for standard AR-15 configurations.
Sons of Liberty Gun Works AR-15 Ejection Port Cover Assembly was the fourth most added dust cover on GunPartPicker in August 2026, behind the Aero Precision AR-15 Ejection Port Cover Assembly, with about 6% of all dust covers added to builds. That's its 2nd straight month at #4. Builds with this dust cover are split between .223 Wylde (33%) and 300 Blackout (33%), split between mid-length (50%) and pistol-length (50%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 5 retailers we track have it in stock. It dipped to $13.99 at Palmetto State Armory for a stretch in August 2026, well under its usual $16 to $20.90, so sales do come around. Buying today, the lowest price is $13.99 at Palmetto State Armory, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 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 33 builds that include this one
Geissele Automatics G2S Two Stage AR-15 Trigger .154"
Sons of Liberty Gun Works AR-15 Forward Assist Assembly
Sons of Liberty Gun Works AR-15 Gas Tube Stainless Steel Mid-Length
Bravo Company M16 Bolt Carrier Group Black
BCM GFHMK2MED Ambidextrous MK2 Charging Handle Compatible w/ Mil-Spec AR-15 Black 7075 T-6 Aluminum
FN AR-15 M16 Barrel 16 Mid-Length 5.56mm
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Ar-15 Ejection Port Cover Assembly
| Build | Parts | Total |
|---|---|---|
 | 23 | $1875.95 |
 | 14 | $4497.91 |
 | 13 | $2650.95 |
 | 23 | $2341.93 |
 | 16 | $1243.22 |
 | 13 | $1975.18 |
 | 15 | $1078.71 |
 | 16 | $759.01 |
 | 21 | $1316.04 |
 | 13 | $998.77 |
1 global rating
Top reviews
Sons of Liberty Gun Works dust cover assembly comes with everything pre-installed which saves the worst install task in AR building. Hinge pin is tight, no rattle. Spring snaps the door open positively. Black phosphate matches most upper finishes.
