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Posted: 12/12/2013 8:01:46 AM EDT
Local shop posted this as an "older Colt upper from an M16" that they say has a KAC rail. 11.5" overall. Comes with a BCG and CH.

Does this look legit? Sounds like it is old stock he is trying to move. What is it worth?



Link Posted: 12/12/2013 8:02:23 AM EDT
[#1]
Looks nice. What's the price?
Link Posted: 12/12/2013 8:04:21 AM EDT
[#2]
It looks like a nice upper, but I doubt its from a "Colt M16".
Link Posted: 12/12/2013 8:05:16 AM EDT
[#3]
$650
Link Posted: 12/12/2013 8:05:53 AM EDT
[#4]
The handguard nut looks like Armalite
Link Posted: 12/12/2013 8:06:03 AM EDT
[#5]
That's also not a knights rail. Those are Knights rail covers but I've never seen that barrel nut on a Knights rail.
 






ETA: What store, those cases look framiliar
Link Posted: 12/12/2013 8:06:17 AM EDT
[#6]
It's a 6933 upper with a different type of muzzle. However the Colt Commando has a 11.5" barrel. They're very hard to find.
Link Posted: 12/12/2013 8:06:34 AM EDT
[#7]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
That's also not a knights rail. Those are Knights rail covers but I've never seen that barrel nut on a Knights rail.
View Quote


This.
Link Posted: 12/12/2013 8:06:51 AM EDT
[#8]
Pic of the front sight base:

Link Posted: 12/12/2013 8:07:22 AM EDT
[#9]
Is it a "C" marked upper? "C" marked carrier? MP marked bolt? "F" marked front sight?
Link Posted: 12/12/2013 8:07:40 AM EDT
[#10]
Is that flash hider pinned?

Maybe it's the perspective of the picture but that barrel looks kinda short.

Is that charging handle a BCM/Gunfighter ?

Link Posted: 12/12/2013 8:09:30 AM EDT
[#11]
Link Posted: 12/12/2013 8:10:15 AM EDT
[#12]

Discussion ForumsJump to Quoted PostQuote History
Quoted:


Is that flash hider pinned?



Maybe it's the perspective of the picture but that barrel looks kinda short.



Is that charging handle a BCM/Gunfighter ?



View Quote
11.5 SBR/M16 Upper

 



Badger charging handle
Link Posted: 12/12/2013 8:10:42 AM EDT
[#13]
Description also listed it as a Troy FH. Not sure if it is pinned or not.

I was also suspect on the barrel nut. So, 6933 upper with a rail that isn't a KAC? He said it was free floated...
Link Posted: 12/12/2013 8:12:03 AM EDT
[#14]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
11.5 SBR/M16 Upper  

Badger charging handle
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Is that flash hider pinned?

Maybe it's the perspective of the picture but that barrel looks kinda short.

Is that charging handle a BCM/Gunfighter ?

11.5 SBR/M16 Upper  

Badger charging handle


Yea, I see he Badger now that I actually took 10 seconds to look at it.

Link Posted: 12/12/2013 8:13:43 AM EDT
[#15]
It is definitely a Knights Armament Rail. It's an Knight's Armament RAS
Link Posted: 12/12/2013 8:16:00 AM EDT
[#16]

Discussion ForumsJump to Quoted PostQuote History
Quoted:


It is definitely a Knights Armament Rail. It's an RAS
View Quote
No.

 



This is a RAS










As I stated, those are Knights rail covers, that is it.
Link Posted: 12/12/2013 8:16:53 AM EDT
[#17]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
It is definitely a Knights Armament Rail. It's an Knight's Armament RAS
View Quote


You are saying it IS a KAC RAS rail? How can you tell? Is that barrel nut normal?
Link Posted: 12/12/2013 8:17:05 AM EDT
[#18]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
No.  

This is a RAS

http://www.knightarmco.com/shop/images/m4_carbine_ras_98064_pic.jpg


As I stated, those are Knights rail covers, that is it.
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
It is definitely a Knights Armament Rail. It's an RAS
No.  

This is a RAS

http://www.knightarmco.com/shop/images/m4_carbine_ras_98064_pic.jpg


As I stated, those are Knights rail covers, that is it.

No, that is a Knight's RIS
Link Posted: 12/12/2013 8:17:22 AM EDT
[#19]
It is the Knights Free Float RAS.

http://www.quarterbore.com/kac/kacffras.html
Link Posted: 12/12/2013 8:17:47 AM EDT
[#20]
Knight's RIS is a drop in rail system. Knights RAS is a free float system or drop in system.
Link Posted: 12/12/2013 8:18:06 AM EDT
[#21]

Discussion ForumsJump to Quoted PostQuote History
Quoted:





No, that is a Knight's RIS
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:



Quoted:


Quoted:

It is definitely a Knights Armament Rail. It's an RAS
No.  



This is a RAS



http://www.knightarmco.com/shop/images/m4_carbine_ras_98064_pic.jpg





As I stated, those are Knights rail covers, that is it.



No, that is a Knight's RIS
My B

 
Link Posted: 12/12/2013 8:18:13 AM EDT
[#22]
I don't know what you guys are talking about with that not being a KAC rail.

I had that exact KAC rail on a 9mm SBR upper.
Link Posted: 12/12/2013 8:18:21 AM EDT
[#23]
Link Posted: 12/12/2013 8:19:01 AM EDT
[#24]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
It is the Knights Free Float RAS.

http://www.quarterbore.com/kac/kacffras.html
View Quote


Looks like this is the winner.

Link Posted: 12/12/2013 8:20:53 AM EDT
[#25]
Any markings on the bolt or actual upper receiver?
Link Posted: 12/12/2013 8:21:24 AM EDT
[#26]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Is it a "C" marked upper? "C" marked carrier? MP marked bolt? "F" marked front sight?
View Quote


OP, you need to answer this question...
Link Posted: 12/12/2013 8:21:44 AM EDT
[#27]



I have one on a carbine I had built by a well known industry guy that was very popular on here about 10 years ago.  They were pretty state of the art then as there really wasn't much available free float and railed at the time.  It still works just fine, as do all of my none free float versions.  
Link Posted: 12/12/2013 8:21:52 AM EDT
[#28]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Any markings on the bolt or actual upper receiver?
View Quote

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.
Link Posted: 12/12/2013 8:22:45 AM EDT
[#29]
If the price is over $400, I'd pass.
There is a reason he is selling it...
Link Posted: 12/12/2013 8:23:06 AM EDT
[#30]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


OP, you need to answer this question...
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Is it a "C" marked upper? "C" marked carrier? MP marked bolt? "F" marked front sight?


OP, you need to answer this question...


Where on the upper should I look?

Assuming it is legit, what should it be worth?
Link Posted: 12/12/2013 8:25:11 AM EDT
[#31]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Any markings on the bolt or actual upper receiver?

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.








You need to calm down and take a step back. This isn't the deal of the century until you verify exactly what it is.
Used gunshop uppers are usually mixmaster junk.
Link Posted: 12/12/2013 8:25:35 AM EDT
[#32]
Link Posted: 12/12/2013 8:27:06 AM EDT
[#33]
Without seeing the casting marks on the receiver or the stampings of the barrel, you can't really tell if it's genuine Colt.

It has a KAC (or Chinese copy) free float tube, Troy muzzle break and Magpul (or Chinese copy) rear BUIS.  Also has some aftermarket tac-latch on the charging handle.

ETA:  The Knight's rail covers could be Chinese copies also.  Everything is likely authentic gear, but the copies are getting hard to tell nowadays.
Link Posted: 12/12/2013 8:27:38 AM EDT
[#34]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

Where on the upper should I look?
View Quote



C or D on the upper = colt



Link Posted: 12/12/2013 8:28:14 AM EDT
[#35]
Looks like a mix master.  The only thing about it coming off a F/A gun is that the barrel might be shot to shit.


PASS
Link Posted: 12/12/2013 8:28:49 AM EDT
[#36]
Discussion ForumsJump to Quoted PostQuote History
Quoted:








You need to calm down and take a step back. This isn't the deal of the century until you verify exactly what it is.
Used gunshop uppers are usually mixmaster junk.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Quoted:
Any markings on the bolt or actual upper receiver?

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.








You need to calm down and take a step back. This isn't the deal of the century until you verify exactly what it is.
Used gunshop uppers are usually mixmaster junk.


I am not chomping at the bits to buy it. Why is it funny that it could have been mated to a FA lower? The second set of info from him said it was from the mid-80s and has about a 3k round count.

He is asking $400. After hearing the age and round count I am not really interested.
Link Posted: 12/12/2013 8:30:02 AM EDT
[#37]
Left side of carrier will be stamped with a C if it is colt:

Link Posted: 12/12/2013 8:30:15 AM EDT
[#38]
Is there a c stamp near the upper forge code? What are the barrel markings?
Link Posted: 12/12/2013 8:32:10 AM EDT
[#39]
Bolt will have MPC mark if authentic:

Link Posted: 12/12/2013 8:32:54 AM EDT
[#40]
If it was originally from the mid 80s it wouldn't have a flat top.  It is probably a replacement upper and not a Colt.  What twist is the barrel?

It is sounding more and more like something you should pass up on.
Link Posted: 12/12/2013 8:34:02 AM EDT
[#41]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Looks like a mix master.  The only thing about it coming off a F/A gun is that the barrel might be shot to shit.


PASS
View Quote


This, and don't forget you have potential NFA issues.
Link Posted: 12/12/2013 8:36:22 AM EDT
[#42]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I am not chomping at the bits to buy it. Why is it funny that it could have been mated to a FA lower? The second set of info from him said it was from the mid-80s and has about a 3k round count.

He is asking $400. After hearing the age and round count I am not really interested.
View Quote


Impossible. That upper is most certainly NOT from the mid 80's.

The barrel maybe, but the upper, no way jose.


It's funny that he says it was on a full auto lower because it sounds like typical tactical shmacktical gunshop garbage.

If it really was on an auto lower, then no way would I want that barrel.

Also, the whole "3,000rds" is pure BS. I'd bet that if you gauged the barrel you would find that it is shot out.
One more thing, the barrel was probably cut down from something else, it doesn't look right.

Pass on that, and never again trust that particular gunshop.
Link Posted: 12/12/2013 8:36:42 AM EDT
[#43]
Discussion ForumsJump to Quoted PostQuote History
Quoted:

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
Any markings on the bolt or actual upper receiver?

I have not seen it in person yet. What do I need t look for.

He said the gun was originally fully auto. If that makes a difference.

Yeah it could make a difference on barrel wear ,. but other than that nope.
Link Posted: 12/12/2013 8:38:45 AM EDT
[#44]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


Impossible. That upper is most certainly NOT from the mid 80's.

The barrel maybe, but the upper, no way jose.


It's funny that he says it was on a full auto lower because it sounds like typical tactical shmacktical gunshop garbage.

If it really was on an auto lower, then no way would I want that barrel.

Also, the whole "3,000rds" is pure BS. I'd bet that if you gauged the barrel you would find that it is shot out.
One more thing, the barrel was probably cut down from something else, it doesn't look right.

Pass on that, and never again trust that particular gunshop.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
I am not chomping at the bits to buy it. Why is it funny that it could have been mated to a FA lower? The second set of info from him said it was from the mid-80s and has about a 3k round count.

He is asking $400. After hearing the age and round count I am not really interested.


Impossible. That upper is most certainly NOT from the mid 80's.

The barrel maybe, but the upper, no way jose.


It's funny that he says it was on a full auto lower because it sounds like typical tactical shmacktical gunshop garbage.

If it really was on an auto lower, then no way would I want that barrel.

Also, the whole "3,000rds" is pure BS. I'd bet that if you gauged the barrel you would find that it is shot out.
One more thing, the barrel was probably cut down from something else, it doesn't look right.

Pass on that, and never again trust that particular gunshop.



The barrel kind of reminds me of the old NESARD, Model 1, etc gunshow specials that were common in the 80s/early 90s.  

They frequently came with roll pins instead of taper pins in the front sight base.
Link Posted: 12/12/2013 8:39:13 AM EDT
[#45]
Discussion ForumsJump to Quoted PostQuote History



The finish on the barrel and FSB doesn't look Colt to me.
Link Posted: 12/12/2013 8:39:33 AM EDT
[#46]

Discussion ForumsJump to Quoted PostQuote History
Quoted:
I am not chomping at the bits to buy it. Why is it funny that it could have been mated to a FA lower? The second set of info from him said it was from the mid-80s and has about a 3k round count.



He is asking $400. After hearing the age and round count I am not really interested.

View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:



Quoted:


Quoted:


Quoted:

Any markings on the bolt or actual upper receiver?


I have not seen it in person yet. What do I need t look for.



He said the gun was originally fully auto. If that makes a difference.


You need to calm down and take a step back. This isn't the deal of the century until you verify exactly what it is.

Used gunshop uppers are usually mixmaster junk.




I am not chomping at the bits to buy it. Why is it funny that it could have been mated to a FA lower? The second set of info from him said it was from the mid-80s and has about a 3k round count.



He is asking $400. After hearing the age and round count I am not really interested.

Because it sounds like the LGS guy is trying to impress you with " Boy, this here upper came off a gen-u-ine gummit machine gun!!" as if that makes it somehow rare or valuable.

 





Link Posted: 12/12/2013 8:40:37 AM EDT
[#47]
Walk away.
Link Posted: 12/12/2013 8:45:31 AM EDT
[#48]
I guess it depends on how old it is but: 1) A Colt upper should have a C stamped or forge code near the supplier's forge code. I have seen where someone posted a pic of an older flat top upper with a C stamped in the channel for the charging handle. There should also be "M4" stamped above the hole for the gas tube. 2) Colt uppers have used a black dust cover spring for a while now, that one is silver 3) Colt shaves the bayonet lug on their 11.5 barrels, that barrel's is intact 4) there will be a "0" stamp near the chamber and a date stamp near the FSB, not sure of other markings a short Colt barrel 5) the FSB will be F marked on the left side 6) forward assist, at least on newer Colt uppers, should have a hole and roll pin visible; that one does not 7) BCG should be stamped C on the carrier and MP C on the bolt 8) 6933 barrels appear to be pencil profile, .625 under the FSB; that one looks .75 under the FSB

I believe brand new take off 6933 uppers where ~$800. I don't think I'd pay $650 for a questionable, possibly put together upper, with god knows how many rounds through it if it was on a M16, upper. You could build new one for that. And is that rust near the FSB?
Link Posted: 12/12/2013 8:50:49 AM EDT
[#49]
just so long as OP knows he can't legally put it on top of just any old lower
Link Posted: 12/12/2013 8:53:41 AM EDT
[#50]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
just so long as OP knows he can't legally put it on top of just any old lower
View Quote


Sure he can..........in about 2 sec.
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