The Luth-AR A1 Ejection Port Cover Assembly (Luth-AR part no. UR05AA1) is a direct-fit replacement for the classic A1-style dust cover found on AR-15 upper receivers, complete with the pin and spring needed for a full functional assembly rather than just the cover plate alone. It snaps shut over the ejection port to keep dirt, debris, and moisture out of the action when the rifle is not firing, then pops open automatically as the bolt carrier cycles. Building to the original A1 pattern makes it a straightforward replacement for a worn, damaged, or missing cover on a classic-profile upper.

Key Specifications

• Built to the classic A1-style ejection port cover pattern.
• Sold as a complete assembly, including pin and spring.
• Direct-fit replacement for standard AR-15 upper receivers.
• Opens automatically as the bolt carrier cycles and snaps shut when at rest.
• Fits standard mil-spec AR-15 upper receivers using the A1-pattern dust cover opening.

Frequently Asked Questions

Does this include the pin and spring? Yes, it is sold as a complete assembly, not just the cover plate.

What style upper does this fit? Standard AR-15 uppers using the classic A1-style ejection port cover.

Buy the Luth-AR A1-Style Ejection Port Cover Assembly

Replace a worn or missing dust cover with a complete, classic A1-pattern assembly built to keep debris out of your action. See more from Luth-AR or shop our full lineup of AR dust covers. Order it from our Lubbock, Texas gun shop for fast, insured shipping.