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Originally Posted by Carn
The company Barrett is actually making an "improved" M4 that is going to be of a higher caliber. Supposedly it will behave like the 7.62 rounds, but smaller/lighter. It's supposed to be 115 or 120gr I think.
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Interesting. I just found the following. Apparently its called the M468, fires a 6.8mm round, and is just an upper receiver, attaching to existing M16/M4 lower receivers to save on acquisition and maintenance costs.
http://www.military.com/soldiertech/..._M468,,00.html
Looks very interesting. I like that they moved away from the 5.56mm round--I personally think it's a underpowered, especially in the M4 which seems to be the weapon of choice in the types of engagements the Army has been involved in as of late...