Trying to help a friend figure out what upper he has. 300 BO and has this symbol on the receiver.
Posted By: NTRP
Re: Help ID this Upper - 02/20/16 02:58 AM
It could be 1 of 1000 generic uppers being made now. Lots of shops doing these on the side. Sorry I don't have your answer but it my just be a nondescript upper.
Posted By: aggiehunter03
Re: Help ID this Upper - 02/20/16 03:00 AM
I thought it kind of resembled the Rainier Arms logo but haven't handled one in person.
I'd post that on one of the AR forums
Posted By: 5 Stand Dan
Re: Help ID this Upper - 02/20/16 03:29 AM
+1
Cardinal forge make upper receiver blanks for many companies. For example:
RRA
DSA
Spikes Tactical
LMT
Stag
CMT
Posted By: aggiehunter03
Re: Help ID this Upper - 02/20/16 03:56 AM
Does Cardinal make them for YHM?
Posted By: Big Fitz
Re: Help ID this Upper - 02/22/16 01:48 AM
Below is some info I found on other sites, hope this helps.
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
