Is there any way to identify an unmarked a1 upper ? Now with a lot of pics

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[ARCHIVED THREAD] - Is there any way to identify an unmarked a1 upper ? Now with a lot of pics

Posted: 6/12/2017 5:44:37 PM EDT

I picked up an upper and it is A1 style sights and a 10.5 or so barrel . I was going to use it for a pistol build . It has a flat handguard retainer and a teardrop FA . I will grab a picture later , But I do not see marks on the bolt or receiver .

Posted: 6/12/2017 5:49:48 PM EDT

[#1]

Need good clear pics of all sides, front included. That'll do it.

Posted: 6/12/2017 6:47:51 PM EDT

[#2]

Posted: 6/12/2017 6:48:06 PM EDT

[#3]

Posted: 6/12/2017 6:58:33 PM EDT

[#4]

Check this out. I think it's a GM or H&R upper. http://www.ar15.com/forums/t_3_123/584919_GM_or_HandR_upper_assembly__an_old_and_somewhat_confusing_subject_.html

Posted: 6/12/2017 8:17:21 PM EDT

[#5]

Quote History

Quoted:
Check this out. I think it's a GM or H&R upper. http://www.ar15.com/forums/t_3_123/584919_GM_or_HandR_upper_assembly__an_old_and_somewhat_confusing_subject_.html

View Quote

I had a GM when I first went in the army . Turns out if you sign up they have loaner guns

Posted: 6/13/2017 12:09:01 AM EDT

[#6]

Is the gas tube hole on the front round or X shaped?

Posted: 6/13/2017 12:26:05 AM EDT

[#7]

Quote History

Quoted:
Is the gas tube hole on the front round or X shaped?

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It is round . I have an old one on a beater gun that is X

Posted: 6/13/2017 12:34:07 AM EDT

[#8]

Round gas tube hole means it's a commercial Upper, made by Sendra or one of its offshoot companies back in the '80's. If you look on the very rear outside edge of the forward assist boss you should see a little tiny bump/tit, another trait of these uppers. They have rear forging flash, sometimes front flash, sometimes not, and are generally black or dark charcoal gray in color. Yours fits the bill. Decent quality, just not USGI.

Posted: 6/13/2017 12:52:05 AM EDT

[#9]

Hello whiskerz. I believe all the upper receivers I have seen with the round gas tube hole have had both front and rear forging flash, yours is the first one I recall seeing with no front forging flash. Since I started paying attention to the shape of arrow heads, all the ones with the round gas tube hole have what I think of as an "open headed" arrow like the one pictured here.

ETA: whiskerz, could you take some more pictures of that receiver out in the sunlight? If you have time, I would like to see one from 90 degrees from each side.

Posted: 6/13/2017 9:22:49 AM EDT

[#10]

The arrowhead is closed . I will grab some pictures in better light today

Posted: 6/13/2017 9:23:33 PM EDT

[#11]

The tit.

Posted: 6/14/2017 9:40:48 AM EDT

[#12]

Does not have the tit .

Posted: 6/14/2017 12:38:45 PM EDT

[#13]

Quote History

Quoted:
Does not have the tit .

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Interesting! It is most certainly a commercial upper given the round gas tube hole. Nothing wrong with that, it will serve its purpose just as well as a USGI upper.

Posted: 6/14/2017 11:12:00 PM EDT

[#14]

whiskerz, can you post additional pics just for kicks? Can you take one of the round gas tube hole area too?

Quote History

Quoted:

Interesting! It is most certainly a commercial upper given the round gas tube hole. Nothing wrong with that, it will serve its purpose just as well as a USGI upper.

View Quote

ETA: Here's another pic that shows the MrM1A1 famed tit a little better:

Posted: 6/15/2017 7:18:47 AM EDT

[#15]

I have an A1 upper that has a x instead of a round hole for the gas tube and its has that tit on it. No flashing on the carry handle and had that almost purple look to it. Ive been trying to figure out for a long time who made it,Other than the tit and no forge codes it basiclly like the other a1 uppers I have.

Posted: 6/15/2017 11:37:56 AM EDT

[#16]

Quote History

Quoted:
I have an A1 upper that has a x instead of a round hole for the gas tube and its has that tit on it. No flashing on the carry handle and had that almost purple look to it. Ive been trying to figure out for a long time who made it,Other than the tit and no forge codes it basiclly like the other a1 uppers I have.

View Quote

Likely the same mfger, there were some with X shaped gas tube holes as well.

Posted: 6/25/2017 9:00:53 PM EDT

[#17]

Thanks guys

[ARCHIVED THREAD] - Is there any way to identify an unmarked a1 upper ? Now with a lot of pics

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