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Upper Receiver identification?

This is a discussion on Upper Receiver identification? within the M16 AR15 forums, part of the Rifle Forum category; How about some pics , to help me i.d my upper , i think its a cmmg( it has keyhole symbol and a f marked ...

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Old June 21st, 2008, 11:56 PM   #16
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How about some pics , to help me i.d my upper , i think its a cmmg( it has keyhole symbol and a f marked front site)

Last edited by bustincaps; July 20th, 2008 at 01:27 PM.
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Old June 4th, 2011, 11:34 PM   #17
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Is there any reason why the pics haven't worked for over 6 months now? If this is going to be a sticky it should at least work

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Old September 9th, 2011, 02:40 PM   #18
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Picture links still do not work. Can any of the Moderators please get this fixed....it would be nice to have a visible ID guide.

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Old September 9th, 2011, 11:36 PM   #19
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Here's a link to an upper receiver ID page that works. It's a bit dated, but still useful:

Bigger Hammer

Thanks from SGV
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Old May 7th, 2012, 09:14 PM   #20
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http://www.ar15.com/content/swat/keepitrunning.pdf lubing ar15

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Old August 14th, 2014, 10:40 PM   #21
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My 76 SP1 markings
Colt/Martin Merietta.
Not sure what the proof mark is on the front side close to the ejection port
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File Type: jpg 003.jpg (11.9 KB, 8 views)

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Old December 29th, 2015, 02:03 AM   #22
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Straycat, appears to be a C in a square, (a Colt factory proof mark).

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