Forge markings on Uppers?

[mvician]

I have an upper that is supposedly Colt mfg. It has the Diemaco stylized "D" next to an split "A" (Anchor Harvey) but no "C" anywhere.

The bolt carrier has the Diemaco stylized "D" with a large "C" above it.

Is the upper really a Colt?

Yes.........

[nap]

Great! I paid a Colt price but was a little worried when I didn't see a "C" on the upper receiver.

Thanks Nap

[ra2bach]

yeah i have a DD with square on it and it stands for Brass Aluminum Forgings.......They're supposedly change their tooling the most and have the cleanest forgings according to another post earlier in this thread.

I have an upper from a verrry well respected amnufacturer with the square on it and it is the worst looking forging I have ever seen.

it has several surface voids that would look like deep rust pitting if this were made of a ferrous metal...

[Javelin]

Forging marks/makers.

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

Should sticky that. Good info!

[RB211]

Anyone know who made this one?

[polydeuces]

Just as an observation - forging origins are just a small part of the puzzle. For instance - have a DD upper with the BA square - tight fitting on Noveske, DD, POF, ST lower.
Have another "no name" BA forge upper - completely the opposite - loose fit, and kinda rough on the edges.
Apparently who does the finish machining is far more important - as with lowers.

[truename]

There are also the ones that don't have any markings, like my 14.5" LMt upper. It does have some tiny defects, not machining related but forging related I guess... like some residue left an imprint when the forging was done.
It's a non-issue really.

My 2004 Defender 2000 also has no markings (other than the white LMT)

[ridgerunner70]

Is Anchor Harvey Aluminum upper a good quality upper?

[stwings]

Is Anchor Harvey Aluminum upper a good quality upper?

Yes!!

[Kdubya]

Is Anchor Harvey Aluminum upper a good quality upper?

Yes!!

Poor guy had to wait almost four years for an answer...