Who else offers Upper w/Real M4 ramps

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[ARCHIVED THREAD] - Who else offers Upper w/Real M4 ramps

Posted: 8/17/2005 8:03:56 PM EDT

besides CMT and Colt? Stripped, not a barreled upper.

and yes I know Colt doesnt offer them, I just dont feel like paying over $200 for a $100 part.

Posted: 8/17/2005 8:05:54 PM EDT

[#1]

LMT

Posted: 8/17/2005 8:08:04 PM EDT

[#2]

Quoted:
LMT

as stripped uppers? I wouldnt want the logo though.

Posted: 8/17/2005 8:13:05 PM EDT

[#3]

CMMG.

Posted: 8/17/2005 8:13:44 PM EDT

[#4]

Quoted:
CMMG.

Real M4 cuts not dremeled

Posted: 8/17/2005 8:27:34 PM EDT

[#5]

This sounds weird, but my Armalite flattop upper came with ramps.

Posted: 8/17/2005 8:40:29 PM EDT

[#6]

CMMG dremel cuts theirs?

Posted: 8/17/2005 8:42:26 PM EDT

[#7]

Quoted:
Quoted:
LMT

as stripped uppers? I wouldnt want the logo though.

Edit- I just noticed "Stripped".

No, I do not know anybody who has stripped LMT uppers for sale.

Posted: 8/17/2005 8:45:30 PM EDT

[#8]

My RRA NM upper came with them.

Posted: 8/17/2005 8:47:43 PM EDT

[#9]

My RRA Entry Tac. has buttery smooth feed ramps

Posted: 8/17/2005 9:00:24 PM EDT

[#10]

Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

Posted: 8/17/2005 9:22:21 PM EDT

[#11]

Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

Not sure if this accurate. I have several Colts with the with M4 ramps, including a post ban Match Target II, and 6400C. They look exactly like the feed ramps on the 6920.

By the way, the 6400C is marked "M4 Carbine" on the lower, so is it an M4 or isn't it?

Posted: 8/17/2005 9:54:57 PM EDT

[#12]

Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

Do you really believe what you're saying?

That's like saying that you don't have a "real" bolt catch roll pin, because it's not a real bolt catch roll pin unless it's on a govt issued rifle.

Get a life and quit trolling any thread that mentions Colt.

Posted: 8/17/2005 10:10:47 PM EDT

[#13]

Quoted:
Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

Do you really believe what you're saying?

That's like saying that you don't have a "real" bolt catch roll pin, because it's not a real bolt catch roll pin unless it's on a govt issued rifle.

Get a life and quit trolling any thread that mentions Colt.

I've never heard of an M4 Bolt Catch Pin. Have you? So then there is no distinction is there. But I bet you thought you were being clever there.

Posted: 8/17/2005 10:29:00 PM EDT

[#14]

Since the the person who started the thread said "Real M4 Feed Ramps" that by default means Colt because only Colt makes the M4. If you dont buy Colt your feed ramps arent real M4 ramps, just a clone. This isnt an issue of techincal specifications, but a company trademark

However...what determines if something is "real" or not? I personally determine how "real" my weapons are by how they function.

Posted: 8/18/2005 2:48:06 AM EDT

[#15]

Quoted:
Since the the person who started the thread said "Real M4 Feed Ramps" that by default means Colt because only Colt makes the M4. If you dont buy Colt your feed ramps arent real M4 ramps, just a clone. This isnt an issue of techincal specifications, but a company trademark

Actually LMT and CMT have the real deal M4 feed ramps also, they are not simply dremel cuts.

Posted: 8/18/2005 8:55:21 AM EDT

[#16]

This forum is turning to shit. All I asked was a simple fucking question.

Posted: 8/18/2005 8:57:51 AM EDT

[#17]

Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

-1

Posted: 8/18/2005 9:08:37 AM EDT

[#18]

Guess you cant get a real GI haircut unless you enlist either...

If CMT does indeed make Colt's uppers...and makes the same M-4™ type feed ramp cuts...
Then CMT probably uses the same cutting tools and programs to cut both CMT and Colt's ramps

In which case the only difference would be the Colt™ logo?

Posted: 8/18/2005 10:10:58 AM EDT

[#19]

Quoted:
This forum is turning to shit. All I asked was a simple fucking question.

Actually, this forum turned to shit a long time ago

Posted: 8/18/2005 10:49:00 AM EDT

[#20]

No argument from me, but its a well known fact that all the cool people hang out in the build section. We have less ignorance and more actual weapon interest...... but keep that our secret.

Posted: 8/18/2005 11:05:02 AM EDT

[#21]

If I recall
M4 Barrel + M4 Upper: OK
Non M4 Barrel + M4 Upper: Not OK
M4 Barrel + Non M4 Upper: OK
Right?

Posted: 8/18/2005 11:13:23 AM EDT

[#22]

Quoted:
If I recall
M4 Barrel + M4 Upper: OK
Non M4 Barrel + M4 Upper: Not OK
M4 Barrel + Non M4 Upper: OK
Right?

Funtion-wise, yes.

BTW, repub18, CMT makes some high quality stuff and I'm VERY pleased with mine (M4 cut).

It matches up to my Sabre barrel perfectly.

WIZZO

Posted: 8/18/2005 11:37:54 AM EDT

[#23]

Quoted:
Quoted:
This forum is turning to shit. All I asked was a simple fucking question.

Actually, this forum turned to shit a long time ago

+1

Posted: 8/18/2005 11:51:05 AM EDT

[#24]

You should have started off with putting a caveat into your statement "If you don't know the difference between REAL M4 ramps and M4 ramp like cuts (www.ar15.com/forums/topic.html?b=3&f=118&t=191733), don't bother to answer".

Posted: 8/18/2005 12:20:41 PM EDT

[#25]

Quoted:
No argument from me, but its a well known fact that all the cool people hang out in the build section. We have less ignorance and more actual weapon interest...... but keep that our secret.

Dude! What the hell did you let the cat out of the bag for???

Posted: 8/18/2005 12:27:14 PM EDT

[#26]

Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

The Colt LE6921 and 6933 (Commando) are both roll marked M4LE. IMHO that would make it an "M4".

Posted: 8/18/2005 12:52:37 PM EDT

[#27]

My Colt AR6721 Tactical Carbine has them as well, including the M4 barrel extension and "F" marked FSB (before I chopped it for a FF forend). My LE6920 and both of my MT6400Cs have them as well of course. An MT6400C is marked "M4 Carbine"-is that not considered a Title I M4? Colt says it is, after all.

Perhaps someone should contact Colt to tell them they're wrong

Posted: 8/18/2005 1:13:08 PM EDT

[#28]

AFAIK, here's the list:

Colt, LMT, CMT and Aramalite. A little known fact - all new production Armalite upper receivers have correct extended ramps - that's ALL of them AR-15 A2 and A4 and AR-10.

RRA doesn't offer correct M4 cuts, they Dremel them in.

There may be more people, like vendors selling uppers with anodized M4 ramps in them, for example I got a few from Del-Ton a while back, but I don't have any idea who they got it from.

Posted: 8/18/2005 1:18:04 PM EDT

[#29]

Quoted:
<snip>
There may be more people, like vendors selling uppers with anodized M4 ramps in them, for example I got a few from Del-Ton a while back, but I don't have any idea who they got it from.

That just reminds me, I have an A2 upper from M&A parts that had M4cuts in it (the correct cuts too)

Here's a pic. (It's a bad pic, but I have since dremeled the barrel extension to match the ramps due to horrible FTFeed problems from the rifle barrel extension)

WIZZO

Posted: 8/18/2005 1:25:11 PM EDT

[#30]

Quoted:
Quoted:
<snip>
There may be more people, like vendors selling uppers with anodized M4 ramps in them, for example I got a few from Del-Ton a while back, but I don't have any idea who they got it from.

That just reminds me, I have an A2 upper from M&A parts that had M4cuts in it (the correct cuts too)

Here's a pic. (It's a bad pic, but I have since dremeled the barrel extension to match the ramps due to horrible FTFeed problems from the rifle barrel extension)

img.photobucket.com/albums/v702/WIZZO_ARAKM14/DCP_0529a.jpg

WIZZO

Haven't seen many A2 uppers with the extended feed ramps cuts . . . pretty cool.

Posted: 8/18/2005 1:27:55 PM EDT

[#31]

I didn't think anything of it at the time, but I should have just swapped the upper and kept this one.

I'm not sure what kind of uppers M&A is running out the door nowadays.

WIZZO

Posted: 8/18/2005 10:50:59 PM EDT

[#32]

Quoted:
Technically, real M4 feed ramps must be a feature on a military issue Colt made M4A1 carbine.

And I dont buy into that 6920 "close as can be" bullshit

It's either an M4 or it isnt and no one can own an M4 unless they enlist

Since everyone else is picking apart this post let's not forget to mention that service members do not own the equipment, the government does.

Posted: 8/19/2005 12:41:30 AM EDT

[#33]

So what's the real difference (not manufacturing difference) between the cuts CMMG puts in their upper receivers and the feed cuts put into Colt's uppers?

Do they look different? Do they not meet up with the barrel extensions properly? Do they not aid in the feeding of cartridges fromt the magazine into the chamber? Would I be better served to NOT have these cuts in my upper, and just have normal (un-cut) uppers like my three other ones?

Posted: 8/19/2005 2:40:38 AM EDT

[#34]

Quoted:
Quoted:
Quoted:
<snip>
There may be more people, like vendors selling uppers with anodized M4 ramps in them, for example I got a few from Del-Ton a while back, but I don't have any idea who they got it from.

That just reminds me, I have an A2 upper from M&A parts that had M4cuts in it (the correct cuts too)

Here's a pic. (It's a bad pic, but I have since dremeled the barrel extension to match the ramps due to horrible FTFeed problems from the rifle barrel extension)

img.photobucket.com/albums/v702/WIZZO_ARAKM14/DCP_0529a.jpg

WIZZO

Haven't seen many A2 uppers with the extended feed ramps cuts . . . pretty cool.

Colt 6520, if I have the number correctly.

Posted: 8/19/2005 3:16:39 AM EDT

[#35]

WIZZO-
What speed setting/ bit did you use to bring the extension down? I've got a DPMS M4-profile I'm going to try to put in an Armalite upper, and it'll give me the same problem you demonstrated.

Posted: 8/19/2005 3:46:25 AM EDT

[#36]

y

Quoted:
I'm not sure what kind of uppers M&A is running out the door nowadays.

Whatever's cheapest that they can lay hands on.

I smooth the ramps with a Cratex bullet after cutting them with a stone.

Posted: 8/19/2005 3:07:40 PM EDT

[#37]

Quoted:
WIZZO-
What speed setting/ bit did you use to bring the extension down? I've got a DPMS M4-profile I'm going to try to put in an Armalite upper, and it'll give me the same problem you demonstrated.

It is a Dremel metal bit. I think it was about $8 at Wal*Mart. The diagram I have of Dremel bits says it might be bit # 9901.

I just cranked it up to 3/4 speed and had at it. The steel of the barrel extension was actually pretty soft and it didn't take too long to match the ramps.

WIZZO

[ARCHIVED THREAD] - Who else offers Upper w/Real M4 ramps

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