C
clarkclint10xsolid but a few notes
Reviewed on April 2, 2026
anodizing has a slight variation from the other receivers in my build but quality is there
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Ar-15 Ejection Port Cover Assembly
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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.
Specifications
MPNPORTDOORCOVERKI
MaterialSteel
ColorBlack
Available Merchants(4)
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Frequently Built With
Based on build data
Sons of Liberty Gun Works Ar-15 Gas Tube Stainless Steel Pistol
Sons of Liberty Gun Works Ar-15 5.56 Bolt Carrier Group 158 Carpenter Sp/hpt/mpi
Sons of Liberty Gun Works Ar-15 Forward Assist Assembly
Midwest Industries, Inc. Ar-15 Combat Rifle Folding Sight Set
Geissele Automatics Ultra Duty Checkered Takedown Pin Set
Sons of Liberty Gun Works Stripped Upper Receiver
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
100%
AR-15100%
CaliberBased on real build data showing which calibers builders choose alongside this product.
33.3%
.223 Wylde33.3%
300 Blackout33.3%
5.56 NATO33.3%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
50%
Mid-Length50%
Pistol50%
| Product | Category | Times Built Together |
|---|---|---|
| Sons of Liberty Gun Works Ar-15 Gas Tube Stainless Steel Pistol | 4 | |
| Sons of Liberty Gun Works Ar-15 5.56 Bolt Carrier Group 158 Carpenter Sp/hpt/mpi | 3 | |
| Sons of Liberty Gun Works Ar-15 Forward Assist Assembly | 3 | |
| Midwest Industries, Inc. Ar-15 Combat Rifle Folding Sight Set | 2 | |
| Geissele Automatics Ultra Duty Checkered Takedown Pin Set | 2 | |
| Sons of Liberty Gun Works Stripped Upper Receiver | 2 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| .223 Wylde | 33.3% |
| 300 Blackout | 33.3% |
| 5.56 NATO | 33.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 50% |
| Pistol | 50% |
Builds Featuring This Part
See all 10 →Builds in the community that include the Ar-15 Ejection Port Cover Assembly
| Build | Parts | Total |
|---|---|---|
 | 23 | $2033.78 |
 | 14 | $4538.90 |
 | 13 | $2651.76 |
 | 23 | $2310.29 |
 | 16 | $1294.60 |
 | 13 | $1878.20 |
 | 15 | $1052.16 |
 | 16 | $827.74 |
 | 21 | $1173.95 |
 | 13 | $922.62 |
Customer reviews
4.5out of 5
2 global ratings
Top reviews
M
Mikey210/10
Reviewed on March 23, 2026
ran a couple hundred rounds with zero issues. solid pickup for the money
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