Bolt Carriers?

AR/M4 AR Technical Discussion
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Bolt Carriers, AR15 or M16, What are the pros and cons?:confused:

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https://www.m4carbine.net/showthread.php?t=14534

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and http://spreadsheets.google.com/pub?key=pwswheghNQsEuEhjFwPrgTA&single=true&gid=5&output=html

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FMR…
Thank You!, I am trying to educate myself, I just did not see or find that thread.
I appreciate you directing me without the usual web-nonsense:laugh:, Thank You!