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 Upper Receiver forging mrkings
Cpl112  [Team Member]
3/2/2010 7:10:49 AM EST
Is there a place (Website) where I can go to show me the different brand of Mfg's and the markings they use on there upper receivers...

Any help would be appreciated...

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VarmitSniper  [Industry Partner]
3/2/2010 8:32:54 AM EST
The forge mark will only tell you where it was forged, not who machined it.

altopwescap  [Member]
3/2/2010 8:33:05 AM EST
There's a difference between forge markings and manufacturers stamps/markings.

Upper receiver forge markings:

Offset Square is: Brass Aluminum Forging
LMT is: No Forge Marks, but marked LMT or L is: LMT
AF is: Alcoa Forge
C AF is: Colt Alco Forge
A (splintered) = Anchor Harvey Aluminum
C MB is: Colt / Mueller Brass
Cardinal’s head (stylized bird head) is: Cardinal Forge
CH is: Colt Harvey Aluminum
Crosshairs w/"AR" is: ArmaLite
CK is: Colt / Kaiser Aluminum
CM is: Colt / Martin Marietta
D (stylized) is: Diemaco
DK is: Diemaco / Kaiser Aluminum
E is: Emco
EK is: EMCO/Kaiser
E MB is: EMCO/Mueller Brass
FA is: FNMI / Anchor Harvey
FK is: FNMI / Kaiser Aluminum
FM is: FN/Martin Marietta
FMB is: FNMI / Mueller Brass
LK is: LAR / Kaiser Aluminum
LM is: LAR / Martin Marietta
M "diamond" is: Mueller Industries
PA is: Capco / Anchor Harvey
PM is: Capco / Martin Marietta
Square (symbol) is: Brass Aluminum

M-16 markings:

CAF Colt / Alcoa Forge
CH Colt / Harvey Aluminum (1st Colt Forgings)
CM Colt / Martin Marietta
DK Diemaco / Kaiser
FK, FS, BK, DK, EK, FK, AF, CW, AA, FS Bushmaster
LK FN / Kaiser
LM LAR / Martin Marietta (Army Spares Contract)
“Splintered A” F: FNMI Anchor Harvey“Splintered A” F: FNMI Anchor Harvey
“Splintered A” C: Colt Anchor Harvey
Splintered A Olympic Arms? (Anchor Harvey)

My list of verified upper receiver forge markings used by AR-15 upper manufactuers/sellers

DSA - Cardinal forge
Rock River - Cardinal forge
Delton - Cerro forge, square
DPMS - Cerro
Spikes Tactical - Cerro
Stag - Cardinal, Cerro
LWRC- splintered A
Para USA - ZM
Knight’s Armament - Cerro (keyhole)
Wilson Combat - splintered A
Double Star - Cerro
Smith &Wesson - Cerro
Daniel Defense - Cerro
Sabre Defense - Cerro?
Remington - Cerro
BCM - Cerro, square
Bushmaster - Cerro
Stag - splintered A, Cardinal
J&T Distributing (Doublestar) - Cerro, C
CMMG - Cerro
Colt M4 - Cerro (C keyhole), square, Cardinal (“C“ bird‘s head), C AF

warpig8654  [Team Member]
3/2/2010 8:51:47 AM EST
The same manufacturer can use various forgings with different forge marks so there is no one list that identifies this. Forge marks do not denote the manufacturer.
altopwescap  [Member]
3/2/2010 3:59:43 PM EST
Other than Colt and FNMI, you are right Warpig. No one has said otherwise! But then you really need to READ the original question carefully!
Cpl112  [Team Member]
3/3/2010 3:56:14 PM EST
Thanks all who replied... altopwescap had what I was looking for...

Thanks again!!!


And SEMPER FI to all the other Devil Dog's who responded!!!

Joefriday22  [Member]
3/22/2010 1:08:48 PM EST
Were the different forge codes from different time periods. In other words, were CH and CK used at the same time or was one before the other, were they used on different model M16's etc.?

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