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Archived [ARCHIVED THREAD] - School me on 300blk build
Posted: 9/20/2014 12:23:25 AM EDT
I've read some parts are interchangeable between 5.56 and 300blk like magazines bolts etc. I just need a list of other parts I need for a 300blk upper, obviously new barrel. What else will I need?

Link Posted: 9/20/2014 1:24:28 AM EDT
[#1]
muzzle device
Link Posted: 9/20/2014 7:45:03 AM EDT
[#2]
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muzzle device
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Yep.  That's it.  Barrel, flash hider/break.

Archived [ARCHIVED THREAD] - School me on 300blk build
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