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AR-10 build

5K views 17 replies 11 participants last post by  dickpalmer 
#1 ·
Question....What is the equivelant Nato round to the .308? For instance, .223 has 5.56. On a CMMG stripped lower, it is marked 7.62, so would it be 7.62X54 or 54R?
 
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