Not sure if the news has hit the streets yet or not, but Brownells now carries a new production ejection port cover like the old school ones pre-A2 style. Before you had to search for one and pay out the yin-yang for one in decent shape as only hoarders like JJ (oneshot) had them sitting around, and or maybe Sawman trying to get $100 for a beat up one but there would be 10 pages of bullshitting on his original post and no mention of the ejection port cover....Anyway, here’s the part number # 078-000-467WB.
They are also selling complete A1 style upper there now also.
https://www.brownells.com/rifle-parts/receiver-parts/ejection-port-cover-parts/ejection-port-cover-assemblies/ar-15-a1-ejection-port-cover-assembly-sku078000467-124474-225242.aspx?sku=078-000-467
They are also selling complete A1 style upper there now also.
https://www.brownells.com/rifle-parts/receiver-parts/ejection-port-cover-parts/ejection-port-cover-assemblies/ar-15-a1-ejection-port-cover-assembly-sku078000467-124474-225242.aspx?sku=078-000-467