AR-15 Ejection Port Cover Assembly

The AR-15 Ejection Port Cover Assembly is a component that is installed on the upper receiver assembly of the AR-15 rifle. What this AR-15 part does is ensures that dirt and debris is kept free from your rifle while it is not being fired. The design of this ejection port cover will open it once the bolt retracts, allowing the spent cartridge to be ejected.

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The AR-15 Ejection Port Cover Assembly was considered essential when the AR-15 rifle was first designed. Military doctrine stressed the importance of keeping your rifle clean, lubricated, and well maintained. With the wide ejection port opening on the AR-15, it was considered important to have a mechanism to be able to effectively shut out dirt, debris, and keep the bolt free from obstructions.

On all aspects, the engineers who designed the AR-15 accomplished this with the addition of this simple ejection port cover assembly. The design of the ejection port assembly is so that it stays shut until the bolt is retracted back either manually or by firing a round. The rearward movement of the bolt will open the ejection port, providing enough clearance for spent rounds to be ejected from the rifle.

  • Factory New AR-15 Part
  • Military-SPEC
  • Contains All Parts Necessary for Installation

More Information

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Customer Reviews

Very Pleased
Review by Ismeal Y.
Verified Buyer
Received in three days after buying. Will be back to shop from KS again.
Flawless Manufacturing 5*
Review by Patrice P.
Verified Buyer
Perfect spare ejection port cover assembly for my AR15.
Great for me
Review by Shanti A.
Verified Buyer
Delighted with this order.
Very Pleased
Review by Bakari S.
Verified Buyer
Pleased with this AR15 ejection port cover assembly.
Top-Notch AR15 ejection port cover assembly A++
Review by Rudolpho H.
Verified Buyer
Lowest price I could find that was in stock. Shipping was speedy via UPS.
Superb Spare Part
Review by Isiah G.
Verified Buyer
Price is perfect and shipping was quick.
Just as described.
Review by Latham X.
Verified Buyer
Finest AR15 ejection port cover assembly for the buck from a awesome company. Thank you ks!
Good Transaction
Review by Rayford D.
Verified Buyer
Cost is perfect and shipping was quick.
Very Pleased
Review by Cassius U.
Verified Buyer
I ordered two of these ejection port cover assemblys. Used one for repair, other is stored in my spares box.
Review by Raleigh R.
Verified Buyer
Drop In replacement ejection port cover assembly for my AR15.
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