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Posted: 9/8/2002 6:35:45 AM EDT
Does anyone know when the UI stamp began appearing on USGI 20 round magazines? I have 9 Colt magazines with .223 floorplates, of these 8 of them don't have the UI stamp on the front of the magazine. Is the one lone .223 marked magazine with UI stamped on it a transitional type thing? Or is it more likely that someone took a later magazine and put a .223 floorplate on it? Just looking for a history lesson more than anything.

P.S. I have checked the magfaq, and the answer is not there.
Link Posted: 9/8/2002 6:57:27 AM EDT
They could be Adventureline bodies.
Link Posted: 9/8/2002 7:08:30 AM EDT

Originally Posted By gus:
They could be Adventureline bodies.



I thought about that.

I know that all Colt 20's were made by UI, but were they all marked UI?

Link Posted: 9/8/2002 7:10:03 AM EDT
To add to my original post:

I have never paid more than $20 for any of these, so I am not really worried about whether or not I was ripped off, just wondering if they are authentic or not.
Link Posted: 9/8/2002 4:00:09 PM EDT
Link Posted: 9/9/2002 3:19:48 AM EDT
All but one of my colt 20's have a UI stamp. The one marked with a .223 floorplate has a "1" with a circle around it on the side of the mag body with no UI stamp at all. I bought this magazine new in the cardboard box a few years ago. Is this a case of switched base plates or did colt subcontract different companys to make their mag bodies? Thanks in advance.--Thomas
Link Posted: 9/9/2002 10:30:15 AM EDT
Link Posted: 9/10/2002 1:00:54 PM EDT
I have some NIB Colt 20s with no UI markings on them. I think the date is 69 or 70 on the box. I never paid much attention to it since I figured the bodies just got mixed up at the factory or something.
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