Applications
The 6.5×40 Cartridge: Longer Reach for the M4 & M16 – Small Arms Defense Journal
http://sadefensejournal.com/wp/?p=2414Another 7.62mm Bullet For M-16s
https://www.strategypage.com/dls/articles/Another-7.62mm-Bullet-For-M-16s-1-8-2012.asp
Development
Wayback Machine - Wikipedia
https://en.wikipedia.org/wiki/Wayback_MachineLWRCI UCIW SIX8 Review - Shotgun News
https://web.archive.org/web/20140429050101/http://www.shotgunnews.com/2012/11/09/lwrci-uciw-six8-review/http://www.shotgunnews.com/2012/11/09/lwrci-uciw-six8-review/
http://www.shotgunnews.com/2012/11/09/lwrci-uciw-six8-review/
6.8mm Remington SPC
Defense Review - 6.8x43mm SPC Cartridge for Urban Warfare CQB and Short-to-Medium-Range Sniping
https://web.archive.org/web/20040623114932/http://www.defensereview.com/modules.php?name=News&file=article&sid=383