Didn't see another thread on this issue. Why would one place the selector switch between settings?
https://www.popularmechanics.com/mil...firing-defect/The U.S. Army’s standard service weapon, the M4A1 carbine, has a defect that allows it to discharge a round without actually pulling the trigger. The flaw was caught on video earlier this year by a soldier at a shooting range, and testing by the Army has detected nearly a thousand weapons affected by the problem.
Another article: https://www.armytimes.com/news/your-...-m4s-and-m16s/
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