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Archived [ARCHIVED THREAD] - Help ID a M-16 A1 upper
Posted: 3/5/2006 10:25:51 AM EDT
I just bought a M-16 A1 upper , it has a forward assist , no shell deflector , and has forging letters P M in the right area under rear sight , who made this ? , and is it a GI , or a reproduction?

Link Posted: 3/5/2006 11:06:16 AM EDT
[#1]
P stands for "CAPCO", who would be the company that machined and finished the receiver...

M stands for "Martin Marietta", who would be the company that forged the receiver...

I would venture and say that it is GI surplus...
Link Posted: 3/5/2006 12:37:38 PM EDT
[#2]
I have found they work just fine I have used several in builds over the years.
Archived [ARCHIVED THREAD] - Help ID a M-16 A1 upper
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