[ARCHIVED THREAD] - M4 Barrel Extensions

Posted: 11/9/2008 6:43:34 PM EDT

Ok, so I know that I bring this up a lot, but I have been wondering about these M4 barrel extensions. I know that the M4 feed ramps are different from manufacturer to manufacturer but what I am wondering is if it is only the angle of the feed ramp cut in the UPPER RECIEVER that is different. Basically, what I'm asking is if all M4 BARREL EXTENSIONS are the same, and if the only variance between companies is the actual size/angle of the cuts in the upper.

Thanks

Mike

Posted: 11/9/2008 7:02:17 PM EDT

[#1]

M4 cuts should all be the same. They are supposed to be all Mil-Spec. One exception may be RRA. Don't now if they corrected that or not.

Posted: 11/9/2008 7:04:46 PM EDT

[#2]

Quoted:
M4 cuts should all be the same. They are supposed to be all Mil-Spec. One exception may be RRA. Don't now if they corrected that or not.

Interesting, I've been thinking about a 16" Bushy M4 barrel, those should be Mil-Spec Barrel Extenstions, right?

Posted: 11/9/2008 7:12:52 PM EDT

[#3]

i believe so but am not sure. Someone will eiher come along soon for a positive answer or you can ask Bushmaster or there are several dealers who sell Bushmaster barrls in the EE, One in particular sells a lot of them but I don't remember the name off hand.

Posted: 11/10/2008 5:10:59 AM EDT

[#4]

bump

Posted: 11/11/2008 8:06:49 AM EDT

[#5]

I found your answer. Below is the dealer I mentioned in the EE. Read his note and your question should be answered as well as it can be. If not he would be one of the better people to ask.

http://www.ar15.com/forums/topic.html?b=7&f=22&t=263482

[ARCHIVED THREAD] - M4 Barrel Extensions

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[ARCHIVED THREAD] - M4 Barrel Extensions

[ARCHIVED THREAD] - M4 Barrel Extensions