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9/22/2017 12:11:25 AM
Posted: 9/27/2005 10:28:49 PM EDT
I am wondering what the recommendation is on 5.56mm ammunition and .223 ammo. At first I was under the impression that they were the same thing, just different systems of measurement. I am building my own lower, and am starting to look for an upper; this is my first AR so I am still wading through all the information. My main questions are as follows:
1. Is there a difference in the two rounds listed?
2. If not are there some barrels/uppers that shoot both .223 and 5.56?
3. If not what are your recommendations for choosing between the two?

Thanks a lot in advance!
Link Posted: 9/27/2005 11:01:38 PM EDT
Link Posted: 9/27/2005 11:42:44 PM EDT
You want 5.56mm.
Link Posted: 9/28/2005 1:36:38 PM EDT

Originally Posted By Combat_Jack:
You want 5.56mm.

. . . unless your building a match rifle. In that case you would want a Wilde or .223 chambering on your barrel.

5.56 is the best bet; It will easily swallow all 5.56 and .223 ammo.

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