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1/25/2018 7:38:29 AM
Posted: 2/13/2006 5:28:19 PM EST
[Last Edit: 2/13/2006 5:48:55 PM EST by Auto]
I'm looking at a upper that has a P and M under the rear site. Any idea who made it?

ETA: I looked at www.ar15.com/forums/topic.html?b=3&f=12&t=223495
But I don't see the P and M markings ...
Link Posted: 2/13/2006 5:32:04 PM EST
Link Posted: 2/20/2006 9:32:58 AM EST
[Last Edit: 2/20/2006 9:33:12 AM EST by Auto]
Anyone else?
Link Posted: 2/20/2006 9:47:52 AM EST
M could mean Martin Marietta


what kind of upper is it? A1?
Link Posted: 2/20/2006 9:59:05 AM EST
[Last Edit: 2/20/2006 9:59:15 AM EST by theshootersden]
I'll venture and say its a Martin Marietta forging finished by CAPCO...


What type of receiver is it? A1 or A2?
Link Posted: 2/20/2006 10:00:03 AM EST
M = Martin Marietta

P = Capco, Inc.


Capco, Inc. (P) made uppers for retrofitting

I'm guessing it's an A2
Link Posted: 2/20/2006 10:02:53 AM EST
[Last Edit: 2/20/2006 10:03:15 AM EST by Auto]
It's a M16A1 upper with forward assist, no shell deflector.
Link Posted: 2/20/2006 10:43:35 AM EST

Originally Posted By Auto:
It's a M16A1 upper with forward assist, no shell deflector.



Take it, they're not easy to find, plenty of other people would take it off your hands, me included
Link Posted: 2/20/2006 11:15:31 AM EST
[Last Edit: 2/20/2006 11:16:27 AM EST by theshootersden]

Originally Posted By Auto:
It's a M16A1 upper with forward assist, no shell deflector.



CAPCO was the largest supplier out of four contractors for the M16A2 conversion kits that were produced for the military... That particular A1 receiver probably became surplus after the conversions were completed...
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