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12/8/2010 10:29:11 AM EDT
I'm considering building a 6.8 spc upper.  Am I correct in my understanding that as long as I have a different magazine for my ammunition, I can still use the same lower I use for my 5.56?  Similarly, all the parts are the same between the 5.56 and the 6.8 with the exception of the barrel and the magazine?

Also, I'm a big fan of all my BCM parts, but they don't sell 6.8 barrels.  Can anyone recommend a good source for quality 6.8 barrels?

Thanks,

J
12/8/2010 10:33:44 AM EDT
[#1]
Different barrel, bolt and mag.

go here Black Hole
12/8/2010 10:59:42 AM EDT
[#2]
You'll need a bolt to go along with the barrel and magazines.

Bison Armory is a good source.
12/8/2010 11:28:59 AM EDT
[#3]
Ar15performance.com is a good choice also. I am torn between one of their 6.8 hunter uppers or one of their 7.62x39 uppers.
12/29/2010 7:34:47 AM EDT
[#4]
So I'm clear, a 6.8 bolt will work in the same bolt carrier I use for my 5.56, right?  It's the bolt that is the difference, not the entire BCG?
12/29/2010 7:38:36 AM EDT
[#5]
right a 6.8 bolt goes in the BCG that you now have.

you can find all kinds of good info over at 68forums.com with no ass hattery
12/29/2010 7:57:49 AM EDT
[#6]
I contacted Black hole a while ago and they still had the spec1 chambers. i dont know if they have updated to spec II or not yet.  I would make sure before you buy.

ETA, Bison is good. Thats where I ended up getting my 20'' 6.8 from.
12/29/2010 8:15:53 AM EDT
[#7]
Quoted:
I contacted Black hole a while ago and they still had the spec1 chambers. i dont know if they have updated to spec II or not yet.  I would make sure before you buy.

ETA, Bison is good. Thats where I ended up getting my 20'' 6.8 from.


BHW is good to go in regards to chamber (SPC II)
12/29/2010 8:27:02 AM EDT
[#8]
Holy Necropost Batman!  

Same thing was just asked 3 days ago.
http://www.ar15.com/forums/topic.html?b=3&f=4&t=521108
12/29/2010 8:38:10 AM EDT
[#9]
You can get a few different 6.8 barrels





These aren't all of them but some that pop into my brain right away.





-White Oak


-Noveske


-Bison Armory


-ARPerformance


-Wilson Combat





I chose to go with the 10.5" Noveske for my SPR build and I also used a 16" from Bison for my dads build.



A good place for tons of info the 68Forums.  http://68forums.com/forums/forum.php

12/29/2010 10:57:18 AM EDT
[#10]
Buuuuut if you see the date on my original post, it was back in August, so I had dibs. jk

Thank you for the link though.
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