Forge markings on Uppers?
I have recently discovered these forums and in turn, being the tech junkie I am, I am researching what I have and where it's made. I have seen various forge markings on uppers and wanted to see who knows what about who made them, etc.
"A" or kind of "A" shape cut in half forge mark on right side of upper
Keyhole forge mark on right side of upper
M on the front of the upper above the gas tube hole(was told it was an "FN contract upper)
Makers of Rock River Arms uppers (no markings, previous to the RRA marked uppers)
Please feel free to add any not listed above.
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 believe that just about covers it, thanks for the info man.
And THAT should be a sticky! Thanks for that info brother...
Any chance on getting another list showing the manufacturers and where they get there uppers?
Case in point, my m&p15A has a keyhole mark on the right side of the upper, and so does my friend's bushy varminter.
Maybe there's endless possibilities, but I've come up empty handed on googling this subject, and the knowledge base of M4C is quite incredible. Thanks in advance.
Originally Posted by powderkeg45
Those are both Cerro forgings (unknown who does Bushmasters or S&Ws finish machining).