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CMMG
Overview
The CMMG AR-15 Ejection Port Cover Kit is a critical component for keeping debris out of your chamber, ensuring reliable function during operation. Made from durable steel and finished in a sleek black, this cover provides both protection and a clean look to your build. It is commonly found in builds featuring a blowback gas system and chambered in 5.56 NATO, making it a practical choice for those configurations.
Based on build data
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Cmmg Ar-15 Forward Assist Kit | 8 | |
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | 7 | |
| Cmmg Ar-15 Bolt Catch | 6 | |
| Cmmg Ar-15 Safety Selector | 5 | |
| CMMG AR15 Magazine Catch - 55AFFA7 | 5 | |
| Fn Ar-15 M16 Barrel 16 Mid-Length 5.56mm | 4 |
| Platform | Percentage |
|---|---|
| AR-15 | 75% |
| AR-9 | 25% |
| Caliber | Percentage |
|---|---|
| 9mm | 66.7% |
| 5.56 NATO | 33.3% |
| Gas System | Percentage |
|---|---|
| Blowback | 66.7% |
| Carbine | 33.3% |
Builds in the community that include the Ar-15 Ejection Port Cover Kit
| Build | Parts | Total |
|---|---|---|
 | 26 | $1855.23 |
 | 19 | $570.93 |
 | 19 | $1095.27 |
 | 16 | $921.01 |
 | 21 | $1120.20 |
 | 25 | $1058.01 |
 | 19 | $631.92 |
2 global ratings
CMMG ejection port cover kit drops in to a standard upper without any fitting. Comes complete with rod, spring, and c-clip preassembled. Spring tension is correct, snaps door open on bolt cycling. Solid budget cover replacement.
CMMG ejection port cover kit comes complete with rod, spring, and c-clip preassembled. Drop in install once the upper is stripped down. Spring tension correct, snaps the cover open positively on bolt cycling. Black phosphate matches mil-spec uppers.
