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The_Dude
04-23-10, 12:18
I just ordered this barrel to fit onto my Bushmaster upper.

http://pics.gunbroker.com/GB/165699000/165699592/pix318331296.jpg
http://pics.gunbroker.com/GB/165699000/165699592/pix318331609.jpg

Will I have to change the barrel extension to make it work with my BM upper? Which length of gas tube will I need? rifle length? thanks for any info.


Riley~~~
Frens
04-23-10, 12:21
no the barrel extension cant be replaced easily and you dont even need to replace it...it'll work just fine ;)

yes, rifle lenght gas tube
The_Dude
04-23-10, 12:26
no the barrel extension cant be replaced easily and you dont even need to replace it...it'll work just fine ;)

yes, rifle lenght gas tube

Thanks, a friend of mine who is an AR nut said I need to verify that it has an 'M4 barrel extension' on it. Is there a difference in barrel extensions from an M4 as compared to an AR-15?


Riley~~~
5pins
04-23-10, 12:59
Take a look at this thread. I’m betting yours doesn’t have M4 ramps.
https://www.m4carbine.net/showthread.php?t=193
Frens
04-23-10, 13:01
I quite sure your friend was talking about mating the right barrel extension with the right upper receiver...take a look at the pic below ;)

http://www.ar15barrels.com/tech/feedramps2.jpg
The_Dude
04-23-10, 13:09
Alright, I'm reading that if I use my PMAGs I shouldn't have any feed errors? Does anyone else have one of these Colt HBAR Elite barrels fit onto an M4?


Riley~~~