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9/24/2008 1:58:09 PM EDT
Just acquired a few 20 round Colt mags.  Most seem to be Army mags with 5.56 designation.  All of them have a UI on the body except of one.  The odd one is marked.223 on the floorplate.  I got the info from the magazine link that said they were mostly post '69 but no mention about the UI.  Any input?  Thanks
9/24/2008 11:30:01 PM EDT
[#1]
UI = Universal Industries

or if you turn the UI on its side it is CH......Colt Hartford
9/25/2008 3:53:33 AM EDT
[#2]
Your magazines are proper.  The 223 marked ones are early Air Force contract mags and don't have the UI marking.
9/25/2008 10:55:35 AM EDT
[#3]
Thanks for the info.  Being that they were USGI, I would assume that they are decent?  I hope so and did get them at a pretty fair price...
9/25/2008 11:43:09 AM EDT
[#4]
Those are great mags; all I use are USGI 20 rounders.  They generally sell for $15-$20 each.
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