Originally posted by BluntForceTrauma
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/United_States_Navy_SEALs_122.jpg/800px-United_States_Navy_SEALs_122.jpg)
When the Army tried to develop the XM8 carbine, they settled on 12" as the optimum standard length. Why?
XM8 carbine -- OAL (stock extended): 33"
(Sorry for the very late reply to your questions, John, but I learned of them only today.
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