Difference between M4 and normal? > AR Discussions

Posted: 11/14/2009 6:41:25 AM EDT

I've been looking at upper receivers, some are listed as M4 Feedramps. Can someone explain?

Thanks

Posted: 11/14/2009 6:48:37 AM EDT

[#1]

LEFT is Standard ~~~ RIGHT is M4

Posted: 11/14/2009 6:52:14 AM EDT

[#2]

Oh, I got some more for ya, just in case you ask which ones should be used

Posted: 11/14/2009 6:53:43 AM EDT

[#3]

I understand there is a difference, but in a building situation, which should I look at? I guess I need to read more... :)

By the way, Osprey's rock! I saw one pick a salmon out of a cove on Isle Royal... awesome!

Posted: 11/14/2009 6:57:50 AM EDT

[#4]

Quoted:
I understand there is a difference, but in a building situation, which should I look at? I guess I need to read more... :)

By the way, Osprey's rock! I saw one pick a salmon out of a cove on Isle Royal... awesome!

M4 ramps are more reliable.

Posted: 11/14/2009 7:02:24 AM EDT

[#5]

Quoted:

Quoted:
I understand there is a difference, but in a building situation, which should I look at? I guess I need to read more... :)

By the way, Osprey's rock! I saw one pick a salmon out of a cove on Isle Royal... awesome!

M4 ramps are more reliable.

I thought that was just for full-auto?

Posted: 11/14/2009 7:06:33 AM EDT

[#6]

Quoted:

Quoted:
I understand there is a difference, but in a building situation, which should I look at? I guess I need to read more... :)

By the way, Osprey's rock! I saw one pick a salmon out of a cove on Isle Royal... awesome!

M4 ramps are more reliable.

I thought that was just for full-auto?

Not necessarily. The M4 extensions are larger for better feeding.

Posted: 11/14/2009 7:07:13 AM EDT

[#7]

It is also usefull in semi-auto.I have had some worn mags with weak springs that will cause feeding problems in an un ramped rifle but with the deeper M4 ramps the weak spring isnt a factor and those mags will feed fine in my M4 feed ramped uppers.

Posted: 11/14/2009 7:35:13 AM EDT

[#8]

Wow good to know

Posted: 11/14/2009 8:00:20 AM EDT

[#9]

Quoted:

Not necessarily. The M4 extensions are larger for better feeding.

Of heavy grain bullets as some times the heavier tip will tend to dip down on the feed ramp.

Posted: 11/14/2009 5:44:28 PM EDT

[#10]

I'm a little bit new to the internals and whatnot like this as well. Does anyone know if the doublestar "m4" has m4 feed ramps?

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[ARCHIVED THREAD] - Difference between M4 and normal?

[ARCHIVED THREAD] - Difference between M4 and normal?