AR-15 Ejection Port Cover - Black Rain Ordnance
The Black Rain Ordnance AR-15 ejection port cover is a high quality steel dust cover door used to keep dirt and debris out of the AR-15 receiver. This kit includes the port door cover, hinge pin, spring, and C-clip for an all-in-one package.
The inside of the cover is laser engraved with Black Rain Ordnance's "Let it Rain!" tag line.
Note: During installation, the spring must be twisted so the long tail will provide tension against the inside of the port door cover and the short tail will provide tension against the receiver.