Can anyone tell me a link to a list of stamp codes on upper recievers and what they mean.  I don't know howmany there are but I know I have two different ones and I was just curious to what the meaning is.
thanks

There's one that looks like a stylized head of a cardinal (the bird). It's for cardinal forge company. That's the only one I know.

The old www.biggerhammer.net web-site has a good run-down on most of the older more established uppers - check the AR15 section "uppers"......

mike

eta - direct link: www.biggerhammer.net/ar15/uppers/

Quoted: Can anyone tell me a link to a list of stamp codes on upper recievers and what they mean.  I don't know howmany there are but I know I have two different ones and I was just curious to what the meaning is. thanks

A (splintered) = Anchor Harvey Aluminum

AF = Alcoa Forge

C AF = Colt Alco Forge

C MB = Colt / Mueller Brass

Cardinal (stylized) = Cardinal Forge

CH = Colt Harvey Aluminum

CK = Colt / Kaiser Aluminum

Circle/Crooshairs w/"AR" = ArmaLite

CM = Colt / Martin Marietta

D (stylized) = Diemaco

DK = Diemaco / Kaiser Aluminum

E = Emco

EK = EMCO/Kaiser

E MB = EMCO/Mueller Brass

F keyhole = FNMI / Cerro Forge

FA = FNMI / Anchor Harvey

FK = FNMI / Kaiser Aluminum

FM = FN/Martin Marietta

FMB = FNMI / Mueller Brass

Keyhole = Cerro Forge

L = Lewis Machine & Tool

LK = LAR / Kaiser Aluminum

LM = LAR / Martin Marietta

M (under diamond) = Mueller Industries

PA = Capco / Anchor Harvey

PM = Capco / Martin Marietta

 I have one marked c h which means colt harvey. Now what does colt harvey mean on a scale of 1-10 (1=bad) I have no clue.,thanks

Quoted: Quoted: Can anyone tell me a link to a list of stamp codes on upper recievers and what they mean.  I don't know howmany there are but I know I have two different ones and I was just curious to what the meaning is. thanks A (splintered) = Anchor Harvey Aluminum AF = Alcoa Forge C AF = Colt Alco Forge C MB = Colt / Mueller Brass Cardinal (stylized) = Cardinal Forge CH = Colt Harvey Aluminum CK = Colt / Kaiser Aluminum Circle/Crooshairs w/"AR" = ArmaLite CM = Colt / Martin Marietta D (stylized) = Diemaco DK = Diemaco / Kaiser Aluminum E = Emco EK = EMCO/Kaiser E MB = EMCO/Mueller Brass F keyhole = FNMI / Cerro Forge FA = FNMI / Anchor Harvey FK = FNMI / Kaiser Aluminum FM = FN/Martin Marietta FMB = FNMI / Mueller Brass Keyhole = Cerro Forge L = Lewis Machine & Tool LK = LAR / Kaiser Aluminum LM = LAR / Martin Marietta M (under diamond) = Mueller Industries PA = Capco / Anchor Harvey PM = Capco / Martin Marietta

Quoted:  I have one marked c h which means colt harvey. Now what does colt harvey mean on a scale of 1-10 (1=bad) I have no clue.,thanks Quoted: Quoted: Can anyone tell me a link to a list of stamp codes on upper recievers and what they mean.  I don't know howmany there are but I know I have two different ones and I was just curious to what the meaning is. thanks A (splintered) = Anchor Harvey Aluminum AF = Alcoa Forge C AF = Colt Alco Forge C MB = Colt / Mueller Brass Cardinal (stylized) = Cardinal Forge CH = Colt Harvey Aluminum CK = Colt / Kaiser Aluminum Circle/Crooshairs w/"AR" = ArmaLite CM = Colt / Martin Marietta D (stylized) = Diemaco DK = Diemaco / Kaiser Aluminum E = Emco EK = EMCO/Kaiser E MB = EMCO/Mueller Brass F keyhole = FNMI / Cerro Forge FA = FNMI / Anchor Harvey FK = FNMI / Kaiser Aluminum FM = FN/Martin Marietta FMB = FNMI / Mueller Brass Keyhole = Cerro Forge L = Lewis Machine & Tool LK = LAR / Kaiser Aluminum LM = LAR / Martin Marietta M (under diamond) = Mueller Industries PA = Capco / Anchor Harvey PM = Capco / Martin Marietta

It means Harvey Aluminum made the raw forging specifically for Colt. Colt then machined & finished the raw forging into the end product. Very few manufacturers actually machine & finish the raw forgings that they purchase from the various foundries listed.

thank you. That I understand.