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10/13/2006 6:19:21 PM EDT
I have an upper that I don't know who made it.  The receiver has a key hole type emblem in the side of the receiver.

How can I tell who made the other parts.  I am new to the AR game and don't know that much about them.

Any help is appreciated.
10/13/2006 6:26:30 PM EDT
[#1]
The key hole means the forging was produced by Cerro Forge.  They make forgings for many companies.

Look at your barrel to see what is stamped on it.  B = Bushmaster, C = Colt, DPMS = DPMS, and so on.  You may have something like:
B MP 5.56 NATO HBAR

That means Bushmaster, magnetic particle tested, 5.56 NATO chamber, HBAR profile
10/13/2006 7:10:11 PM EDT
[#2]
Does every barrel have something stamped in it?  I don't remember seeing anything.  I will look again.

Thanks.
10/13/2006 7:12:56 PM EDT
[#3]
Most have something stamped just forward of the front sight tower.  Some have something under the handguards.

What sort of barrel is it?
10/13/2006 7:20:27 PM EDT
[#4]
Found out who made it.  Model 1 sales.
10/13/2006 8:22:04 PM EDT
[#5]
RRA, OLY, and earlyier Model  sales have no markes on the bbl. I'm sure there are others that I am not familiar with..

The carry handle looks like a cheap Chi-Com cast knock off.. Definatley cast anyways..
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