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Posted: 5/21/2002 11:41:24 AM EDT
    I have an M16A1 upper with the tear drop forward assist and no brass defelector. It came off of a Colt M16A1. Who made these uppers because I do not see any marks on it. I also have an SP1 upper that came off my Colt SP1 lower. I do not see any marks on this upper either. Does anyone know who made it? Thanks.
Link Posted: 5/21/2002 12:14:43 PM EDT
[#1]
Have you tried taking off the handguards to see if there any barrel markings beneath them?
Link Posted: 5/21/2002 12:50:47 PM EDT
[#2]
Yes, the upper that came on the SP1 has
"C MP C" stamped on the bottom of the barrel. The M16A1 upper, has had the barrel changed to a Wilson barrel. Neither upper has any stamping on them that I can find.
    Any help would be appreciated.
Link Posted: 5/21/2002 12:55:31 PM EDT
[#3]
Sorry 'bout that.  You were saying "upper" and I was thinking "barrel".  Lemme see what I can find when I get home from work.
Link Posted: 5/21/2002 1:17:04 PM EDT
[#4]
Link Posted: 5/21/2002 1:49:16 PM EDT
[#5]
Kevin,

great find !!

i just finished checking my 1975ad vintage SP-1 & shure as shootin, there, visible under my 5X magnifying glass glareing back at me is a "C" inside a square & next to it is a tringle, smaller, so out comes my 20X coin & stamp inspection magnifier & find inside the triangle, "VP", as in Vincent Price...! attached as in a brand inside the triangle, i am certain the "C" means Colt, but the other is the individual armorer who proofed it, i thynk.., not certain, but that was the procedure in days gone by........


Link Posted: 5/22/2002 6:07:00 AM EDT
[#6]
Hey Kevin, I found the exact proof marks on mine as cactusjack. However, I only found it on the 1972 SP1 upper. I still do not see anything on the M16A1 upper. Any other suggestions?
Link Posted: 5/22/2002 6:38:32 AM EDT
[#7]
Link Posted: 5/22/2002 1:42:44 PM EDT
[#8]
Hey Kevin it is a small hole upper, I had to use the adapter to put in on the SP1 lower. I have heard of people having them machined into a large hole, do you recommend this?
Link Posted: 5/22/2002 3:47:34 PM EDT
[#9]
Link Posted: 5/23/2002 6:12:59 AM EDT
[#10]
Kevin I have considered selling it or trading it for a Colt A2 16" upper in preban configuration, but I do not know what my upper is worth. Any suggestions.
Link Posted: 5/23/2002 7:53:32 AM EDT
[#11]

Quoted:
Look for any faint proof marks in front of the ejection port -



In particular, you'll be looking for a 'C' in a box, this would verify it as a Colt.  You may also see a # '1' or a triangle shaped proof mark.



 Kevin, thanks for the tip.

 I have a CAR 15 A1 14" upper, no forward assist, no brass deflector, and I have no idea who manufactured this upper.  But, with your tip, I find out that it also has "c" inclosed in a box.
Also, under the A1 rear sight , there is a "C" and "M". What is exactly these 2 letters stand for?  I assume "C" stands for Colt?.. Thanks
Link Posted: 5/23/2002 9:25:46 AM EDT
[#12]
Link Posted: 5/23/2002 10:20:00 AM EDT
[#13]
Hey Kevin, it is a preban barrel with A2 handgaurds. It is in excellent condition, It appears it has been shot very little.
    What are the going prices for a Colt A2 preban upper? Prefer large pin if that is possible.
Link Posted: 5/23/2002 10:49:38 AM EDT
[#14]
Link Posted: 5/23/2002 11:05:16 AM EDT
[#15]


 Kevin, thanks bro.
Link Posted: 5/23/2002 12:46:57 PM EDT
[#16]
What makes mine in the $340.00 range, the fact that it is a wilson barrel or the fact that it is an M16A1? Also, if I part it out, How much should I ask for just the upper, no barrel etc...?
Link Posted: 5/23/2002 1:00:32 PM EDT
[#17]
Link Posted: 5/23/2002 1:58:33 PM EDT
[#18]
Hey Kevin, I appreciate all your help. One clarification though. My barrel is a 16" barrel. It looks like a HBar barrel under the handgaurads, but then it tapers down to a lightweight barrel.
   I agree with you, I think I will find me a large hole A2 grey upper and put a busmaster barrel on it.
Link Posted: 5/23/2002 2:33:29 PM EDT
[#19]
i just checked my other Colt, near the rear sight base is "C" 7 just a bit lower & left there is an "M", BUT !! it still has the "C" in the square, & a triangle, but it is stamped so lightly it is hard to determine what letter or number is in the triangle.........
Link Posted: 5/23/2002 2:37:12 PM EDT
[#20]
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