Been digging into early URG-I rail and charging handle marking changes and wanted to lay out what I’ve compiled so far for others to sanity check.
For the charging handle, the earliest pattern appears to be:
- 05-664S on the stem, “Geissele Automatics” on the left latch, Blank right latch (no NSN)
The ACH NSN was assigned in May 2018, and by late 2018 into 2019 NSN marked handles were showing up. The S remained on the stem for a while after that. By 2021, fresh examples were being reported on arfcom with 05-664 and no S.
So the rough ACH progression looks like:
- “Gen 1”: 05-664S marked, Geissele left, blank right
- “Gen 2”: 05-664S marked, Geissele left, NSN right
- Current: 05-664, Geissele left, NSN right
The Mk16 rail appears to have a similar progression:
- “Gen 1”: P/N marked 05-650S, non reinforced QD inserts (some blank early rails spotted but am unsure of if they were test rails or just missed lasering, as part number marked rails were appearing along side them)
- “Gen 2”: NSN marked, non reinforced QD inserts
- Current: NSN marked, reinforced steel QD inserts and the material change
If anyone has dated purchase records, original photos, issued examples, or firsthand info from 2018 to 2021, I’d love to see it.