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1/18/2008 3:21:50 PM EDT
Got an A1 style with the 11 1/2"bbl/long flash hider set up.  It came on an SGW lower, guy said it was bought in the early 80's, serial # research confirmed that, but who knows if it was ever swapped.  In the right side carry handle notch is a PM, P being upper right looking at it, M lower right.  The bbl is marked 5.56 just behind the gas block under the handguard.  Thats the only markings I found.  Digging around I havent found the PM mark.  Anyone know who made it and rate of twist?
1/18/2008 3:28:12 PM EDT
[#1]
The PM upper is a Phillipines made one.
The  5.56 marked barrel is Olympic arms, probably 1/9 twist.
1/18/2008 3:36:54 PM EDT
[#2]

Quoted:
The PM upper is a Phillipines made one.
The  5.56 marked barrel is Olympic arms, probably 1/9 twist.


The list I got off an old thread lists PM = Capco / Martin Marietta?
1/18/2008 3:40:45 PM EDT
[#3]
So he was on the up and up about they came together probably.  Whats up with the phillipine uppers?  History?
1/18/2008 3:41:01 PM EDT
[#4]

Quoted:

Quoted:
The PM upper is a Phillipines made one.
The  5.56 marked barrel is Olympic arms, probably 1/9 twist.


The list I got off an old thread lists PM = Capco / Martin Marietta?


That may be. Maybe martin marietta shipped their extra forgings that didnt go to the Phillipines to Capco [shrug]......I have seen actual Phillipine rifles with this forging code
1/18/2008 3:41:55 PM EDT
[#5]

Quoted:
So he was on the up and up about they came together probably.  Whats up with the phillipine uppers?  History?


The PM uppers were probably a spares contract that went to civilian sales
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