The CMMG Ejection Port Cover Kit (55BA6E3) is an AR-15 upper receiver parts kit built for rifle builders and repair work, giving you the core components needed to install or replace a standard dust cover assembly. This AR-15 ejection port cover kit is a practical small-parts option for new builds, maintenance benches, and parts bins where simple fit and dependable function matter.
Key Features
- Manufacturer part number 55BA6E3
- Fits AR-15 pistols and rifles
- Material 6061-T6 aluminum
- Finish black
- Major construction details meets or exceeds mil-spec standards
- Included components ejection port cover, rod, spring, and C-clip
Special Features
- CMMG packages the full set of small parts needed for the ejection port cover assembly, so you do not have to source the rod, spring, and clip separately.
- The kit follows a mil-spec pattern, which helps it fit standard AR-15 upper receiver builds and common replacement needs.
- The 6061-T6 aluminum cover gives you a lightweight part that is suited to general rifle use and routine maintenance work.
- This kit works well for builders who want a straightforward replacement part without stepping into custom engraving or non-standard hardware.
- CMMG includes the small C-clip in the package, which saves time during assembly and helps prevent a stalled build over one missing part.
- The black finish gives the cover a standard look that blends easily with most AR-15 upper receiver finishes.
- CMMG backs the product with its Lifetime Quality Guarantee, which adds value for buyers who keep spare parts on hand.
Practical Benefits
- This CMMG Ejection Port Cover Kit (55BA6E3) fits builders who need a complete dust cover setup for an AR-15 rifle or pistol upper.
- The included parts make it easier to finish a new upper build or replace a worn cover without hunting down individual hardware.
- The mil-spec pattern helps the kit work with standard AR platforms, which makes it a useful bench item for general shop use and common repairs.
- The black 6061-T6 aluminum cover gives your build a clean, factory-style appearance while helping protect the action from debris when the rifle is closed.
- If you keep AR-15 spare parts for repairs, upgrades, or future builds, this kit gives you a simple ownership win by covering one of the small assemblies that builders often need at the wrong time.
The CMMG Ejection Port Cover Kit (55BA6E3) is a practical choice for AR-15 builders and repair-minded owners who want a complete, standard-pattern dust cover assembly for dependable rifle setup and maintenance.
| MANUFACTURER | CMMG |