A1 upper ID Help please.

[Salter77]

Hello All! I have an A1 milspec upper that I would like help with identifying the manufacturer. It was on a rifle that I purchased with more modern parts that I swapped for another upper. 16" barrel 6" handguards A1 upper. the only distinguishing marks are an L and an M offset under the dial. I don't believe its a Colt from what I have seen, but rather a Sako? I know there were military sub contractors who made them. Any info would be helpful. Let me know if you need more photos. Thanks.

[G-forceJunkie]

Found this on the net, not sure if it applies to the older A1's:

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

[CHS]

Found this on the net, not sure if it applies to the older A1's:

Forging marks/makers.

Those markings are meaningless when trying to identify who made an upper.

[bjl333]

Anything under the barrel ???

[KaTooM]

Un leash the Dogs over at the retro forum...they will square you away!

arfcom retro

[Salter77]

Thanks for your help gentleman!