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4/1/2010 2:45:02 PM EDT
Can anyone tell me what this symbol on my Upper is??

http://i44.tinypic.com/2vaee6h.jpg
4/1/2010 2:52:02 PM EDT
[#1]
Its a keyhole upper and signifies the manufacturer of the upper, which if Im not mistaken is a Cerro.
4/1/2010 2:52:44 PM EDT
[#2]
EDIT: I was wrong it's a Cerro Metal forge marking
4/1/2010 2:56:54 PM EDT
[#3]
Quoted:
EDIT: I was wrong it's a Cerro Metal forge marking


This
4/1/2010 2:59:46 PM EDT
[#4]
from what I just read they made uppers for bushmaster and rock river, google is your friend
4/1/2010 3:48:02 PM EDT
[#5]
Quoted:
from what I just read they made uppers for bushmaster and rock river, google is your friend


My Stag upper also has this.
4/1/2010 3:52:14 PM EDT
[#6]
I bought the Upper from SOG Amory if that helps identify it...??
4/1/2010 4:01:16 PM EDT
[#7]
that is who forged the raw part. it does not tell you any more then that.   Probably most brands have used these at one time.
4/1/2010 4:50:38 PM EDT
[#8]
Quoted:
I bought the Upper from SOG Amory if that helps identify it...??


It IS a Cerro forging....thats all that means
4/1/2010 5:25:31 PM EDT
[#9]
All that it means is that Cerro forge provided a raw hunk of forged aluminum in the general shape of an upper receiver to a manufacturer who then actually did the machining to turn it into a real upper.

It carries no real meaning except that you now know you have an upper that's made from a proper forging like it's supposed to, but it doesn't tell you who "made" the upper.
4/1/2010 5:39:16 PM EDT
[#10]
O ok, so does anyone have any idea what brand uppers SOG Amory sells, I bought their 16" A-3/M4 Flat Top. But don't know what brand it is.
Any help???
4/1/2010 6:02:48 PM EDT
[#11]
Aero Percision maybe? I'm gonna try to get over there tommorow and I'll ask if they are open.
4/1/2010 6:06:06 PM EDT
[#12]
Oh alright I'd appreciate that
4/1/2010 6:31:44 PM EDT
[#13]
Only SOG Armory can tell you who milled your upper, but then they'd have to kill ya. I looks like they use uppers milled by several manufacturers. The one illustrated on the upper list, looks like a FNMI milled Anchor Harvey forging.

Just a list of upper receiver manufacturers that use or have used Cerro (keyhole) marked forgings:

Addex
Delton
DPMS
Spikes Tactical
LMT
Knight’s Armament
Double Star
Smith &Wesson
Daniel Defense
Sabre Defense
Remington
BCM
Bushmaster
Stag
J&T Distributing (Doublestar)
CMMG - Cerro
Colt M4 - (“C” keyhole)
Yankee Hill

But then how about the companies that do the milling for the lower receivers manufacturers:

LMT (Lewis Machine Tool) - mills for
LMT, Lauer, DS arms, PWA, Eagle, [Armalite ?], Knights Armament, And Barrett

CMT (Continental Machine Tool) - mills for
Stag, Rock River Arms, High standard, Noveske, Century, Global tactical, CLE, S & W, MGI, Wilson Tactical, Grenadier Precision, [Colt ?]

LAR- mills for
LAR, Bushmaster, Ameetec, DPMS, CMMG, Double star, Fulton Armory, Spikes tactical, Grizzly

JVP- mills for
Double Star, LRB, Charles Daly

Mega Machine Shop (MMS) - mills for
Mega, GSE, Dalphon, POF, Alexander Arms

Olympic- mills for
Olympic, SGW, Tromix, Palmetto, Dalphon, Frankford, Century (old)

Sun devil mills their own

Superior arms mills for
Superior, Lauer (new), Defensive Edge/CY6

SMOS mills for
Larue, custom

Territorial Gunsmiths mills for
Territorial Gunsmith’s, Six Sigma Arms, CY6

Tactical Innovations mills for
Global Tactical

Essential Arms mills their own

Hughes Precision mills their own

So you see it's not that easy to give you a sraight answer
4/1/2010 6:46:35 PM EDT
[#14]
Oh Wow
4/2/2010 5:15:49 AM EDT
[#15]
Quoted:
I bought the Upper from SOG Amory if that helps identify it...??


It means that SOG uses quality forgings.  Please note that if this is the same SOG Armory I'm thinking of - in Houston - they do not "make" any of their uppers or lowers.  Instead they have them machined by one of the "real" makers of uppers and lowers and have their engraving put on the lowers.  I have one of those lowers, and it's a very nice, very "in-spec" piece of art.
4/2/2010 6:35:13 AM EDT
[#16]
Yah that's the same SOG Amory. Well that's good to know. I was just wondering because there aren't ANY markings on my Upper besides the one I posted above. Don't get me wrong I love my Upper, I was just curious to as what brand it is.  But, it works for me and I don't have problems so I guess the brand doesn't really matter
4/2/2010 6:40:20 AM EDT
[#17]
Quoted:
Yah that's the same SOG Amory. Well that's good to know. I was just wondering because there aren't ANY markings on my Upper besides the one I posted above. Don't get me wrong I love my Upper, I was just curious to as what brand it is.  But, it works for me and I don't have problems so I guess the brand doesn't really matter


Very few vendors mark their uppers.  Rock River Arms and Bravo Company are the only two I can think of off hand.  Since there is no ATF requirement to mark uppers, but there IS a requirement to mark lowers, most vendors just do what's required.
4/2/2010 7:16:27 AM EDT
[#18]
Quoted:
Yah that's the same SOG Amory. Well that's good to know. I was just wondering because there aren't ANY markings on my Upper besides the one I posted above. Don't get me wrong I love my Upper, I was just curious to as what brand it is.  But, it works for me and I don't have problems so I guess the brand doesn't really matter


JD Machine Tech cuts the lowers for SOG Armory, and they might cut their uppers as well. I know that one of the operations JD does is remove the forging mark from their uppers before they cut them. They use forgings from Brass Aluminum.

But aside from the forge mark, most uppers just aren't marked so you'll never know who actually did the cutting unless you ask them directly and they feel like telling you.
4/2/2010 12:55:29 PM EDT
[#19]
The guy at SOG said most of the uppers they use are Daniel Defense. He said he'd have to look at it to be sure, but that was the best guess.
4/2/2010 2:01:42 PM EDT
[#20]
;It carries no real meaning except that you now know you have an upper that's made from a proper forging like it's supposed to'

That in itself is 'real meaning'. You know at least the part came from a real forging company and isn't some kind of cast crap from who knows who.
4/2/2010 8:54:49 PM EDT
[#21]
Quoted:
The guy at SOG said most of the uppers they use are Daniel Defense. He said he'd have to look at it to be sure, but that was the best guess.


Thanks for finding that out!!!
4/3/2010 12:33:48 AM EDT
[#22]
Quoted:
Oh Wow


And that wasn't even a complete list!
4/3/2010 5:09:53 AM EDT
[#23]
Looks like someone removed the internal lock and filled in the hole.  
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