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12/18/2010 6:24:46 PM EDT
I picked up an upper receiver from the gunshop and am having some trouble placing it (for the price I wasn't leaving it).

To start, it has:
A1 Rear sights,
Forward assist (round button)
Case Deflector
A2 dust cover with silver spring
Front lug without rebate
Raised L -> R for the sight wheel
And a C H forge code (Colt, maybe for Canada?)
Cuts for an M4 feed ramp (short, small, they are definitely original and not done be someone by hand  this is not my picture but they are the same shape and depth as these http://media.photobucket.com/image/m4%20feed%20ramp/rob_s/CDMRLE/FEEDRAMPS.jpg)

I have NOT found a [C] proof just above the port door at the front of the upper, I have not found a stylized D or splintered A anywhere.. in the usual or unusual locations :)

And to top it off the whole thing is on the darker side of XM gray-ish.

Somewhere (and I always used to come across it but for the life of me can't find it, and the forum search did me no good) was a list of receivers that Colt produced for Canada.  Is this one of them?  I can't remember if C H and C M forge codes went to Canada, but the presence of the case deflector makes me think it is.
12/18/2010 6:28:23 PM EDT
[#1]
723 carbine or similar model.





ETA: CH forge code is Colt / Harvey, which would be common for any upper with an A1 rear sight from 1974 until they stopped making them.
12/19/2010 12:08:18 PM EDT
[#2]
For $70 I wasn't going to leave it in the store
12/20/2010 12:29:55 AM EDT
[#3]
You did good and it's Colt.  Shell deflector is nice if shooting left handed.   Would make a nice transition upper.  Put on a tear drop FA and A-1 door to add some character.  Enjoy your build and welcome to retroland.
12/20/2010 4:20:43 PM EDT
[#4]
It would make a good 733...
12/20/2010 5:13:21 PM EDT
[#5]
I'd agree, but I'm in a state that doesn't allow SBR's.  I'd have to go with a pinned and welded job to make it 16" or go with a 723.  I have a pre-ban A2 lower, but it's black.  
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