1. Home
  2. Shop All
  3. Rod for 4390 Ejection Port Door Assembly
 Rod for 4390 Ejection Port Door Assembly
Rod for 4390 Ejection Port Door Assembly 1

Rod for 4390 Ejection Port Door Assembly

Your Price: $4.99
Part Number: PART-4390-rod
Availability: In Stock.

Details

Rod for AR15 Ejection Port Door Assembly

The Rod for AR15 Ejection Port Door Assembly is the pin that connects the ejection port cover to the upper receiver and allows the cover to pivot open and closed. This rod slides through the hinge on the ejection port cover and sits in detents on both sides of the upper receiver, holding the cover in position while allowing it to rotate freely. The black finish matches standard AR15 components and provides corrosion resistance. This rod is a replacement part for damaged or lost ejection port door rods during upper receiver assembly or maintenance.

Key Features

  • Replacement rod for AR15 ejection port door assembly
  • Black finish for corrosion resistance
  • Compatible with standard AR15 upper receivers
  • Allows ejection port cover to pivot open and closed

Perfect For

  • Replacing damaged or lost ejection port door rods
  • AR15 upper receiver assembly
  • Repairing ejection port cover assemblies
  • Maintaining AR15 upper receivers

Ejection Port Cover Function

The ejection port door rod connects the ejection port cover to the upper receiver and provides the pivot point that allows the cover to open when the charging handle is pulled and close when manually pushed down. The rod sits in detents machined into the upper receiver on both sides of the ejection port, which hold it in place while allowing rotational movement. This design keeps dust and debris out of the ejection port when the rifle is not in use.

Standard AR15 Compatibility

This rod fits standard AR15 upper receivers with ejection port cover provisions. The dimensions match mil spec specifications for the ejection port hinge pin hole and detent spacing, which ensures the rod seats correctly and the cover operates smoothly. Verify your upper receiver has standard ejection port cover provisions before ordering.

Black Finish

The black finish provides a layer of protection against corrosion and wear from repeated opening and closing of the ejection port cover. The finish also matches the standard black anodized or phosphate finishes found on most AR15 upper receivers and ejection port covers.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Verify compatibility with your upper receiver before installation. Install with ejection port cover spring and C clip per manufacturer instructions.


Specifications

Product Name: Rod for AR15 Ejection Port Door Assembly

Color: Black

To view the most up-to-date shipping times Click HERE.
To view Warranty, Returns, Terms & Restrictions Click HERE.
To view State Restrictions Click HERE.

Recently Viewed Items

Logo