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Posted: 12/31/2005 5:59:28 AM EDT
Do ALL USGI M16 (and variants: A1, A2) have the small front hole?

I am thinking of building an A1 or earlier clone, and want to make certain that it will fit my Stag lower.
Link Posted: 12/31/2005 6:48:53 AM EDT
[Last Edit: 12/31/2005 6:52:23 AM EDT by rjay]
Yes, small pin. I just sold an M16-no suffix- upper that had been refinished black [ that way when I got it, probably GI ]. Most are gray.
Link Posted: 12/31/2005 7:01:23 AM EDT
Rjay, thank you.

What about the Colt "SP1" models?

I want to make certain that I get the right thing the first time.
Link Posted: 12/31/2005 7:07:33 AM EDT
Link Posted: 12/31/2005 7:19:46 AM EDT
what the others said
Link Posted: 12/31/2005 10:30:01 AM EDT
You're probably looking at the ads from CDNN, SARCO, etc. selling the M16/M16a1 uppers/kits and also stating they are SP1 kits. I don't know why they do that as these kits are all small hole M16/a1 receivers. They are not large hole commercial receivers. Buy any of these kits and put on a Stag lower. That's what I did. Twice.
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