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Posted: 11/14/2002 7:28:20 PM EDT
The barrel is stamped "SS 5.56" and there are raised letters "P M" on the carry handle above the forward assist. It has a 20" barrel. Thanks for your advise.
Link Posted: 11/14/2002 7:33:42 PM EDT
Who made the gun?
Is the 5.56 part of the roll mark kind of offset, one part being deper than the other?
If it is I would say that you have an Olympic Arms barrel.
It would be a 1/9 twist stainless steel barrel.

Of course I could be wrong.

Link Posted: 11/15/2002 2:18:43 PM EDT
It's a Oly receiver that is marked "CAR-AR", and yes the nimbers are offset.
Link Posted: 11/16/2002 3:04:51 AM EDT
Then you have an Olympis Arms lower, I don't know about the upper and the barrel is a stainless steel.
It could be a SUM barrel.
Call up Oly and ask.
Link Posted: 11/16/2002 4:05:41 AM EDT
The PM on your upper is Palmetto Mfg.
They made uppers for numerous other companies,
incl. Oly.
Link Posted: 11/16/2002 1:40:40 PM EDT
Now that's funny.
Palmetto Armory made the uppers but they went through Oly for the lowers.
Link Posted: 11/16/2002 2:23:11 PM EDT
I should have said that palmetto mfg. did the forging.
Just like alcoa and harvey al. co. did for colt
Link Posted: 11/16/2002 7:24:10 PM EDT
Palmetto mfg?
Do you have a source of info for that?
Everything I know about Palmetto is about Palmetto Armory.
From what I can gather they were a small shop that assembled AR15's from parts they bought from everyone else.
I have owned one Palmetto Armory AR15.
Link Posted: 11/17/2002 2:22:21 AM EDT
Palmetto Armory and Palmetto Mfg. are two different companies.
Uppers and lowers are forged by outside contractors and are
machined by whoever builds them into guns.
For example:
The CM on Colt uppers is, Colt-Martin Marrittea
The CH is, Colt-Harvey Aluminum Co.

I read a tech manual a long time ago and found this out.
Also check out www.biggerhammer.net
Link Posted: 11/17/2002 3:05:33 AM EDT
Nothing about Palmetto on Bigger Hammer.
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