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Posted: 10/14/2008 12:59:32 PM EDT
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So, the H&R uppers had flash on the back side, what about the front of the carry handle and the inside? Does anyone have an original? |
They have a reddish tinit from ATF fluid...  Seriously though, I'd like to know also - did GM build uppers also or just lowers?
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Manufacture or assemble? I've seen no evidence that GM also made furniture, or barrels, or BCGs as well as other parts. I'm just curious as to what parts they did manufacture. Makes sense that if they could make a lower, they'd make uppers, but which forge codes would be associated with a GM manufactured rifle? That's what I'm getting at. Not trying to be argumentative, just curious. I'm sure Ekie could straighten this out for us. |
Colt didn't made all of the parts either. Furniture, for example, has been subcontracted (why invest in plastic manufacturing when you can sub it out). Just because a part is marked with a "C" doesn't mean it was made in house by Colt. I would like to know as well what the markings on a GM upper look like (H&R as well), but from the evidence I have found (unfortunately only written, not images), they weren't made by Colt. The main evidence is that Colt was busy filling their own contracts, and wasn't happy about the second and third source contracts. |
The BLack Rifle metniones that several subcomponents wer subcontracted and/or buiolt by Colt even for the HR and GM rifls IIRC. |
Colt, H&R, and GM all had at least one subcontractor in common (Tri-Ordinate Corp). I don't see any note as to Colt being a subcontractor for GM or H&R, but I will reread it in case I missed something. |
| From the s/n study in the M16 Variation Guide above it looks as though from the years 67 thru 72 approximatly 1.75 million Colt M16A1 rifles were produced. For the same time period only 470 thousand GM and 240 thousand H&R M16A1's were made. So if we are finding H&R's then odds should be twice as good for finding GM's. These production numbers are just rough estimates but I was trying to get an idea what the odds were for finding GM uppers if we could identify them. |
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Ok, I have one upper that has no forge codes, no proof marks, forge flash at the rear, machined at the front radius. I also have one upper that has no forge codes, no proof marks, forge flash at the rear, forge flash on the front radius, and two "dents" on the sides where the gas tube enters. These are obviously different. Are they different manufacturers? One H-R the other GM, both H-R, both GM, other? I'd like to know what I have other than that it isn't Colt. Dustin |
Bump because I'd like the answer also. |
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