[ARCHIVED THREAD] - Upper/lower question

Posted: 8/9/2014 8:47:33 AM EDT

On an M16A2 model 711/715, is that an A1 upper and lower then everything else is A2? Reference this thread;

Colt catalog scans

Posted: 8/9/2014 9:02:13 AM EDT

[#1]

I always thought it was A2 everything except the barrel and upper receiver, and from the pics it appears that's how it is.

Posted: 8/9/2014 9:48:40 AM EDT

[#2]

Appears to be an A1 lower also.

Looks like a 603 with A2 furniture, delta ring, round FA and an A2 FH.

Posted: 8/9/2014 9:57:18 AM EDT

[#3]

Colt marked a bunch of A1 lowers as M16A2s in those years, FWIW. They had skinny, A1 profile barrels but were 1:7 twist. I think most of those barrels were exported, likely to Israel. You don't see them very often. The transitional model was adopted as the M16A1E1. I saw and handled one in ROTC in '86 or so.

Posted: 8/9/2014 1:47:01 PM EDT

[#4]

So if I used an A1 upper and lower, and everything else (except barrel) A2, the question becomes could I get away with a 1:7 A2 barrel with an A1 bird cage? I'm sure when it was done it would drive me nuts, but I'm kobling together spart parts to build this one.

Posted: 8/9/2014 2:17:07 PM EDT

[#5]

Quote History

Quoted:
The transitional model was adopted as the M16A1E1. I saw and handled one in ROTC in '86 or so.

View Quote

Looks like the M16A1E1 was a model 645 and could have the A2 barrel. Sounds more like what I have the parts for. Thanks Morg.

Posted: 8/9/2014 2:29:51 PM EDT

[#6]

I have FN and Colt Pencil barrels that are 1x7 twist, they aren't uber rare but not as prevalent as an A1 with 1x12 or A2 in 1x7 twist.

[ARCHIVED THREAD] - Upper/lower question

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[ARCHIVED THREAD] - Upper/lower question

[ARCHIVED THREAD] - Upper/lower question