Forward Controls Design Ejection Port Cover


Flat Dark Earth (FDE)
OD Green

Product Description

EPC (Ejection Port Cover) is based on TDP dimensions, with thoughtful Forward Control touches. Billet machined from 7075 aluminum, and hard coat Type III anodized, it incorporates features FCD thinks many will find useful.

EPC has two “tabs” flanking the cutout for the port cover spring. These tabs allow the EPC to rest on the upper at a greater angle when it’s in the down/open position, which provides more space between the port cover and lower receiver. This allows one’s finger to get underneath the port cover when one wishes to swing it up/close.

Please note that depending on the upper receiver, the area below the ejection port cover will vary in thickness, which affects the angle of the EPC when the port cover is open/down.

Another feature is a shallow circular depression on the side of the EPC to provide texture tactile feedback to the user’s finger when he’s closing the EPC.  A flat surface provides nothing to the user to differentiate one surface from another, it also provides no traction.  A shallow circular depression on the left side of the EPC does both.  FCD incorporates flat surfaces with care as they have their uses. In this case, EPC’s exterior surface is treated as a control surface, where a flat surface rarely makes sense.


  • Material: Billet machined from 7075 aluminum.
  • Finish: Hard coat Type III anodized.
  • EPC is compatible with TDP spec upper receivers.
  • Weight: 0.30oz.
  • Proudly designed and made in the USA.
  • EPC is incompatible with BCM’s Mk2, Aero M4E1, and Centurion Arms CM4 upper receivers.
  • Initial closing and opening of EPC may be stiff, this is normal, and will become easier with 2 or 3 closing/opening cycles.
  • Please examine the upper’s ejection port cover latch/detent relief cut.  If the ejection port latch/detent relief cut is cut too shallow, slight modification may be required for EPC to close.




Forward Controls Design

Technical Information


7075 Aluminum



Firearm Compatibility

AR-15 / M4 / M16

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit

Customer Reviews

Based on 5 reviews
Ant G.
Dope part

This is a good little part to have. Great quality!

James C.

Been wanting a twin dimp odg for a minute. Super fast shipping and couldn’t be happier. Definitely will be ordering again from Milspec!

Christopher C.
Nice machining, odd color

OD Green is a little off in color compared to most ODG out there. Kinda more limey, less earthy. Didn’t really match my rifle.
Port is a little stiff to close. Otherwise it’s clearly high quality and I’m still happy with it.

Austin B.

Super fast shipping and it came as it should

Solid Port Cover

Better than the standard milspec in both looks and function.