what company logo is a circle in a square?

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[ARCHIVED THREAD] - what company logo is a circle in a square?

Posted: 3/12/2005 6:35:23 PM EST

I have an A1 upper receiver with a circle in a square just in front of the ejection port cover.

Posted: 3/12/2005 6:40:11 PM EST

That's a Colt proof mark, which was stamped on all factory assembled rifles up until about 8-10 years ago.

-Troy

Posted: 3/12/2005 6:52:00 PM EST

wow, I thought colt only used a C mark

[ARCHIVED THREAD] - what company logo is a circle in a square?

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