Badly misaligned feed ramps on Colt upper... something to worry about?

[Hygienist]

I recently bought a new in bag but old (2001-2003) Colt upper from someone else.

Looked good but upon inspection the feed ramp alignment is awful. Pretty sure it's legit Colt since it came in a sealed bag, and it has C marks on the upper and the barrel.

Is this something to worry about?

If it is, can I get Colt to fix this? It was originally purchased as an upper only. And if not Colt, this is fixable by a competent gunsmith right?

[Dave L.]

I recently bought a new in bag but old (2001-2003) Colt upper from someone else.

You got F*cked. Not sure where you got it, but if it wasn't Colt Dealer, it's authenticity is questionable.

Post a pic of the upper markings, barrel markings and entire upper if you wouldn't mind.

[Iraqgunz]

Your barrel should be marked something like C MP 1/7 NATO 5.56. As noted the upper will have a large C on the side near the forge marking. I have seen this before, but it's pretty rare. This is one of the reasons why people should pay close attention to checking components. Unfortunately there isn't much that can be done. I would be concerned about the barrel extension not being installed or torqued properly.

Since you bought it 2nd hand I doubt that Colt will look at it, especially considering the age and it's not a complete firearm.

[kwilkin]

Gents, he said it has a "C" on the upper and barrel and you can clearly see the "4" on the right side of the barrel extension.

Regarding whether it's a problem or Colt can fix it, I don't know. I suppose the OP can contact Colt and see what they say. Worst case scenario, you run it as is.

[Iraqgunz]

I doubt it can be fixed. I suppose that they can sort through multiple uppers until they find one that matches, but I doubt they will do that. You also can't simply remove the barrel extension and install a new one.

Gents, he said it has a "C" on the upper and barrel and you can clearly see the "4" on the right side of the barrel extension.

Regarding whether it's a problem or Colt can fix it, I don't know. I suppose the OP can contact Colt and see what they say. Worst case scenario, you run it as is.

[Dave L.]

Gents, he said it has a "C" on the upper and barrel and you can clearly see the "4" on the right side of the barrel extension.

I missed that, my bad.

I wouldn't use it; I would get my money back ASAP.

[Hygienist]

Thanks for the help so far guys. Here's a photodump of the markings on the upper but I don't think it'll be necessary to look at:

http://imgur.com/a/VCFqr

Anyway, I'm wondering where the flaw is. Is it with the upper or the barrel assembly? If it's with the barrel assembly, I'm thinking about getting an identical spec BCM barrel. Would that fix the alignment issue, barring a double dose of bad luck?

And if that works I'll probably use the Colt bbl as a beater barrel then. Forgive the dumb question, but there's no risk of a kaboom with misaligned ramps right? Only feeding issues? (which would be a non-concern since it'd only be for plinking when the Colt bbl is on)

[Toddler]

From the pics it appears to be the receiver and not the barrel that's misaligned.

[LewP]

Is the FSB canted relative to the upper receiver?

[MSpera]

If the extension was off-center that much, wouldn't it block the bolt because it would hit the lugs?

So if it actually is the receiver that's off a bit, could you "fix" it with some careful dremel work?